160 Solution and Colligative properties. Solubility. Method of expressing concentration of solution

Transcription

1 160 Slutin and Clligative prperties A supersaturated slutin is metastale. Disslutin f gases in liquid is always exthermic ecause S ve (nn favurale factr) and in rder t have G ve (spntaneus prcess), H has t e ve. 1 M aqueus slutin is mre cncentrated than 1 m aqueus slutin. Sustances having high V.P. (e.g., petrl) evaprate mre quickly than sustances having lw V.P. (e.g., mtr il). Ba s law : The lwering in vapur pressure f a slutin caused y additin f an nn-vlatile slute is called as Ba s law. Knwalff s rule : In case f a inary slutin, at a fixed temperature, the vapur phase is richer in that cmpnent whse additin causes increase in ttal vapur pressure f the slutin i.e., vapur phase is always richer in the mre vlatile cmpnent. When a nn-vlatile slute is added t the slvent, V.P. decrease, B.P. increase, F.P. decrease. Ethylene glycl is cmmnly added t car radiatrs t depress the freezing pint f water. It is knwn as antifreeze. NaCl r CaCl 2 (anhydrus) are used t clear snw n rads. It depresses the freezing pint f water and reduce the temperature at which ice is expected t e frmed. Plasmlysis : When a plant cell is placed in a hypertnic slutin, the fluid frm the plant cell cmes ut and the cell shrinks. This phenmenn is called plasmlysis and is due t smsis. Bursting f red ld cells when placed in water is due t smsis. Gelatinus Cu 2[ Fe( CN ) 6] and gelatinus Ca (PO4 ) 2 are artificial semipermeale memranes. Semipermeale memrane f Cu 2[ Fe( CN ) 6] dse nt wrk in nn aqueus slutins ecause it get disslved in nn aqueus slvents. Osmtic cefficient (g) is the rati f van t Hff factr (i) t the n. f ins furnished y ne mlecule f the electrlyte (N). i.e., g i / N. Sluility 1. The sluility f a gas in water depends n [MP PET 2002] Nature f the gas Temperature Pressure f the gas All f the ave 2. Which f the fllwing is nt crrect fr D 2 O [Orissa JEE 2002] Biling pint is higher than H 2 O D 2 O reacts slwly than H 2 O Viscsity is higher than H 2 O at 25 Sluility f NaCl in it is mre than H 2 O. The statement The mass f a gas disslved in a given mass f a slvent at any temperature is prprtinal t the pressure f the gas ave the slvent is [AMU 2002] Daltn s Law f Partial Pressures Law f Mass Actin Henry s Law Nne f these 4. Which is crrect aut Henry s law [KCET 2002] The gas in cntact with the liquid shuld ehave as an ideal gas There shuld nt e any chemical interactin etween the gas and liquid The pressure applied shuld e high All f these 5. The statement If 0.00 mles f a gas are disslved in 900 g f water under a pressure f 1 atmsphere, mles will e disslved under a pressure f 2 atmspheres, illustrates [JIPMER 1999] Daltn s law f partial pressure Graham s law Rault s law Henry s law 6. The slutin f sugar in water cntains [BHU 197] Free atms Free ins Free mlecules Free atm and mlecules Methd f expressing cncentratin f slutin ml f.0 M HNO are mixed with 75 ml f 4.0 M HNO. If the vlumes are additive, the mlarity f the final mixture wuld e [DPMT 1986; MH CET 2001].25 M 4.0 M.75 M.50M 2. The amunt f anhydrus Na 2CO present in 250 ml f 0.25 M slutin is [DPMT 2001] g g 6.0 g g. Dilute ne litre 1 mlar H 2SO4 slutin y 5 litre water, the nrmality f that slutin is [DPMT 198] 0.2N 5 N 10 N 0. N 4. If 5.85 gms f NaCl are disslved in 90 gms f water, the mle fractin f NaCl is [CMC Vellre 1991; MP PMT 1994; AFMC 1998] (e) The mlarity f mle f NaCl in 100 ml slutin is

2 [Bihar MEE 1996] (e) Nne f these g f H 2SO4 is present in 2 litres f a slutin. The mlarity f the slutin is [EAMCET 1991; MP PMT 2002] 0.1M 0.05M 0.2M 0.01M 7. What will e the mlarity f a slutin cntaining 5 g f sdium hydrxide in 250 ml slutin [MP PET 1999; BHU 1999; KCET 1999; AIIMS 2000; P. CET 2000] The nrmality f 0.M phsphrus acid ( H PO ) is [IIT 1999; AIIMS 2000] Which f the fllwing has maximum numer f mlecules [CBSE PMT 2002] 16 gm f O 2 16 gm f NO 2 7 gm f N 2 2 gm f H Mlarity is expressed as [JIPMER 1991; CBSE PMT 1991] Gram/litre Mles/litre Litre/mle Mles/1000 gms ml f HCl slutin requires 19.85ml f 0.01M NaOH slutin fr cmplete neutralizatin. The mlarity f HCl slutin is [MP PMT 1999] Slutin and Clligative prperties Hw much f NaOH is required t neutralise 1500 cm f 0.1 N HCl (At. wt. f Na =2) [KCET 2001] 4 g 6 g 40 g 60 g 1. If 5.85 g f NaCl (mlecular weight 58.5) is disslved in water and ml f N HCl, 20 ml f N/2 H the slutin is made up t 0.5 litre, the mlarity f the slutin will 2SO4 and 0 ml f N/ are HNO e[amu 1999; P PMT 2000; AFMC 2001] mixed tgether and vlume made t ne litre. The nrmally f the resulting slutin is [Kerala CET (Med.) 200] A mixture has 18g water and 414g ethanl. The mle fractin f N N water in mixture is (assume ideal ehaviur f the mixture) 5[MP PMT 2000] N The numer f mlecules in 4.25 g f ammnia is apprximately [CBSE PMT 2002] The largest numer f mlecules is in [Kurukshetra CEE 1998] 25 g f CO 2 46 g f C 2 H 5 OH 6 g f H 2 O 54 g f N 2O5 17. If 1 M and 2.5 litre NaOH slutin is mixed with anther 0.5 M and litre NaOH slutin, then mlarity f the resultant slutin will e[cbse PMT 2002] 1.0 M 0.7 M 0.80 M 0.50 M 18. When a slute is present in trace quantities the fllwing expressin is used [Kerala CET (Med.) 2002] Gram per millin Milligram percent Micrgram percent Nan gram percent (e) Parts per millin 19. When the cncentratin is expressed as the numer f mles f a slute per litre f slutin it knwn as [Kerala CET (Med.) 2002] 2 2 Nrmality Mle fractin (e) Mlality Mlarity Mass percentage 20. The nrmality f 2. M H 2SO4 slutin is [KCET 2000] 2. N 4.6 N 0.46 N 0.2 N 21. The mlarity f a slutin made y mixing 50ml f cnc. H 2SO4 (6N) with 50 ml f water is [MP PMT 2001] 6 M 18 M 9 M 6 M g f cane sugar ( C 12H22O11) is disslved in 1 litre f water. The mlarity f the slutin is [MP PMT 2001] 2.0 M 1.0 M 0.5 M 0.25 M 2. The vlumes f 4 N HCl and 10 N HCl required t make 1 litre f 6 N HCl are [Kerala PMT 2004] 0.75 litre f 10 N HCl and 0.25 litre f 4 N HCl 0.25 litre f 4 N HCl and 0.75 litre f 10 N HCl 0.67 litre f 4 N HCl and 0. litre f 10 N HCl 0.80 litre f 4 N HCl and 0.20 litre f 10 N HCl (e) 0.50 litre f 4 N HCl and 0.50 litre f 10 N HCl 24. Which statement is true fr slutin f M H 2SO4 [DPMT 2001] 2 litre f the slutin cntains mle f 2 litre f the slutin cntains mle f 1 litre f the slutin cntains mle 2 SO 4 H O H O Nne f these litre slutin f urea cntains 240g urea. The active mass f urea will e [KCET 2000] N (e) The amunt f K 2Cr2O7 (eq. wt ) required t prepare 100 ml f its 0.05 N slutin is [JIPMER 2002] g g g g 28. With increase f temperature, which f these changes [AIEEE 2002] Mlality Weight fractin f slute Fractin f slute present in water Mle fractin ml f a slutin f arium hydrxide n titratin with a 0.1mlar slutin f hydrchlric acid gave a litre value f 5 ml. The mlarity f arium hydrxide slutin was [AIEEE 200] N 40

3 162 Slutin and Clligative prperties mlar slutin is tained, when 0.5 mle slute is disslved in 4. Mlar slutin [MP PMT means 200] 1 mle f slute present in 250 ml slvent 250 g slvent [BCECE 2005] 250 ml slutin 1000 ml slvent 1000g f slvent 1 litre f slvent 1. Hw many gram f HCl will e present in 150 ml f its 0.52 M 1 litre f slutin 1000g f slutin slutin [RPET 1999] 44. What will e the mlality f a slutin having 18 g f glucse (ml gm 5.70 gm wt. = 180) disslved in 500 g f water 8.50 gm.65 gm [MP PET/PMT 1998; CBSE PMT 2000; JIPMER 2001] 2. The numer f mles present in 2 litre f 0.5 M NaOH is [MH CET 2001] g water and 828g ethyl alchl frm an ideal slutin. The mle fractin f water in it, is [MP PMT 200] What will e the nrmality f a slutin cntaining 4.9 g. H PO4 disslved in 500 ml water [MP PMT 200] mlal NaOH slutin has a density f g/ml. The mlarity f the slutin is [BVP 200] Which f the fllwing mdes f expressing cncentratin is independent f temperature [IIT 1988; CPMT 1999; CBSE PMT 1992, 95; MP PMT 1992; AIIMS 1997, 2001] Mlarity Mlality Frmality Nrmality 7. The mlality f a slutin is [MP PMT 1996] Numer f mles f slute per Numer f mles f slute per Numer f mles f slute per 1000 ml f the slvent 1000 gm f the slvent 1000 ml f the slutin Numer f gram equivalents f slute per slutin 8. The numer f mlecules in 16 gm f methane is ml f the [MP PET/PMT 1998] The numer f mles f a slute in its slutin is 20 and ttal numer f mles are 80. The mle fractin f slute is [MP PMT 1997] The nrmality f a slutin f sdium hydrxide 100 ml f which cntains 4 grams f NaOH is [CMC Vellre 1991] Tw slutins f a sustance (nn electrlyte) are mixed in the fllwing manner 480 ml f 1.5M first slutin ml f 1.2M secnd slutin. What is the mlarity f the final mixture [AIEEE 2005] 1.20 M 1.50 M 1.44 M 2.70 M 42. The nrmal amunt f glucse in 100 ml f ld (8 12 hurs after a meal) is [BHU 1981] 8 mg 80 mg 200 mg 800 mg 2 1 m 0.5 m 0.2m 2 m 45. A slutin f Al2( SO4) { d 1.25 gm / ml} cntain 22% salt y weight. The mlarity, nrmality and mlality f the slutin is M, 4.8 N, M M, 48. N, M 4.8 M, 4.8 N, 4.8 M Nne 46. Which f the fllwing shuld e dne in rder t prepare 0.40M NaCl starting with 100 ml f 0.0M NaCl (ml.wt. f NaCl ) [BIT 1992] Add g NaCl Add 20 ml water Add 0.010ml NaCl Evaprate 10 ml water 47. Which f the fllwing slutins has the highest nrmality [JIPMER 1991] 8 gm f KOH / litre N phsphric acid 6 gm f NaOH / 100 ml 0.5M H 2SO4 48. What vlume f 0.8 M slutin cntains 0.1 mle f the slute 100 ml 125 ml 500 ml 62.5 ml 49. Hydrchlric acid slutin A and B have cncentratin f 0.5N and 0.1N respectively. The vlumes f slutins A and B required t make 2 litres f 0.2N HCl are 0.5 l f A 1. 5 l f B 1.5 l f A 0. 5l f B 1.0 l f A 1. 0 l f B 0.75l f A 1. 25l f B [KCET 199] 50. Cnc. H 2SO4 has a density f 1.98 gm/ml and is 98% H 2SO4 y weight. Its nrmality is [MP PET 2002] 2 N 19.8 N 9.6 N 98 N 51. The mle fractin f the slute in ne mlal aqueus slutin is [CBSE PMT N With 6 gm f xalic acid hw many litres f 10 slutin can e prepared [RPET 1999] 100 litre 10 litre 1 litre 1000 litre 5. Mlarity f 0.2N H 2SO 4 is [KCET 2005] grams f a sustance f mlecular weight 106 was disslved in 100 ml. 10 ml f this slutin was pipetted ut int a 1000 ml flask and made up t the mark with distilled water. The mlarity f the resulting slutin is [EAMCET 1998] 1.0M 10 2 M

4 Slutin and Clligative prperties M 10 4 [EAMCET 1987] M 0.1M 0.2M 55. The mle fractin f water in 20% aqueus slutin f H 2O2 is [EAMCET 199] 0.M 0.4M Which f the fllwing cncentratin factr is affected y change in temperature [DCE 2002] Mlarity Mlality Mle fractin Weight fractin Mle fractin (X) f any slutin is equal t N. f mles f slute Vlume f slutininlitre N. f gram equivalent f slute Vlume f slutininlitre N. f mles f slute Mass f slventin kg N. f mles f any cnstituent Ttal n. f mles f all cnstituents 57. When W B gm slute (mlecular mass M B ) disslves in W A gm slvent. The mlality M f the slutin is WB M B W B 1000 WA 1000 M B WA WA 1000 WA M B W M W 1000 B B 58. Nrmality (N) f a slutin is equal t N. f mles f slute Vlume f slutininlitre N. f gram equivalent f slute Vlume f slutininlitre N. f mles f slute Mass f slventin kg Nne f these 59. The vlume strength f 1.5 N H 2O2 slutin is [CBSE PMT 1997; BHU 2002] Hw many gm f H 2SO4 is present in 0.25gm mle f H 2SO 4 [CPMT 1990] g f hydrgen is present in 5 litre vessel. The mlar cncentratin f hydrgen is [DPMT 2000] T prepare a slutin f cncentratin f 0.0 g/ml f AgNO, 10 g 20 g 64. The weight f pure NaOH required t prepare 250cm f 0.1N slutin is [KCET 1991; Kerala PMT 2004] 4 g 1 g 2 g 10 g 65. If 20 ml f 0.4 N NaOH slutin cmpletely neutralises 40 ml f a diasic acid. The mlarity f the acid slutin is B 67. The distriutin law is applied fr the distriutin f asic acid etween [UPSEAT 2001] Water and ethyl alchl Water and amyl alchl Water and sulphuric acid Water and liqur ammnia 68. Which is heaviest [CBSE PMT 1991] 25 gm f mercury 2 mles f water 2 mles f carn dixide 4 gm atms f xygen 69. The mlarity f a slutin f Na 2CO having 10.6g / 500ml f slutin is [AFMC 1992; DCE 2000] 0.2M 2 M 20 M 0.02M On passing H 2 S gas thrugh a slutin f Cu and Zn ins, CuS is precipitated first ecause [AMU 2001] Sluility prduct f CuS is equal t the inic prduct f ZnS Sluility prduct f CuS is equal t the sluility prduct f ZnS Sluility prduct f CuS is lwer than the sluility prduct f ZnS Sluility prduct f CuS is greater than the sluility prduct f ZnS 71. The numer f mles f slute per kg f a slvent is called its[dpmt 198; IIT 19 Mlarity Nrmality Mlar fractin Mlality gm f pure calcium carnate was fund t require 50 ml f dilute HCl fr cmplete reactin. The strength f the HCl slutin is given y [CPMT 1986] 4 N 2 N 0.4 N 0.2 N 7. Mlecular weight f glucse is 180. A slutin f glucse which cntains 18 gms per litre is [AFMC 1978] 2 mlal 1 mlal 0.1 mlal 18 mlal M f H 2SO 4 is diluted frm 1 litre t 10 litre, nrmality f resulting slutin is [AFMC 2005] 1 N 0.1 N 10 N 11 N 75. If ne mle f a sustance is present in 1 kg f slvent, then what amunt f AgNO shuld e added in 60 ml f slutin [AFMC 2005] [CPMT 1996] It shws mlar cncentratin 0.18 Nne f these It shws mlal cncentratin 6. Hw many grams f diasic acid (ml. wt. 200) shuld e present in It shws nrmality 100 ml f its aqueus slutin t give decinrmal strength[aiims 1992; CBSE PMT 1999; It AFMC shws 1999; strength gm/ gm KCET 2000; CPMT 2001] 1 g 2 g 76. The mlality f 90% H 2SO4 slutin is [density=1.8 gm/ml] [MP PMT 2004] The vlume f water t e added t 100cm f 0.5 N H 2SO4 t get decinrmal cncentratin is [KCET (Engg.) 2001] cm 500 cm 100 cm cm

5 164 Slutin and Clligative prperties 78. If 25 ml f 0.25 M NaCl slutin is diluted with water t a vlume f 500ml the new cncentratin f the slutin is [UPSEAT 2000, 01] M M 0.8 M M grams f a slute is disslved in 90 grams f a slvent. Its mass percent in slutin is What is the mlality f a slutin which cntains 18 g f glucse ( C H 6) in 250 g f water [UPSEAT 2001] 6 12O 4.0 m 0.4 m 4.2 m 0.8 m 81. Calculate the mlality f 1 litre slutin f 9% H 2SO 4 (weight/vlume). The density f the slutin is 1.84 g /ml [UPSEAT 2000] Vlume f water needed t mix with 10 ml 10N HNO t get 0.1 N HNO [UPSEAT 200] 1000 ml 990 ml 1010 ml 10 ml 8. The sum f the mle fractin f the cmpnents f a slutin is Increasing the temperature f an aqueus slutin will cause [IIT Screening 199] Decrease in mlality Decrease in mlarity Decrease in mle fractin Decrease in % w/w gms aqueus slutin f CaCO cntains 10 gms f carnate. Cncentratin f the slutin is [CPMT 1985] 10 ppm 100 ppm 1000 ppm ppm gms f HCl is disslved in 16.2 gms f water. The mle fractin f HCl in the resulting slutin is [EAMCET 200] An aqueus slutin f glucse is 10% in strength. The vlume in which 1 gm mle f it is disslved will e [AIIMS 1992; P. CET 2004] 18 litre 9 litre 0.9 litre 1.8 litre 88. The cncentratin f an aqueus slutin f 0.01M CH OH (e) 0.01N CH OH 89. When 1.80gm glucse disslve in 90 gm f H 2 O, the mle fractin f glucse is [AFMC 2000] mlecules f urea are present in 100 ml f its slutin. The cncentratin f urea slutin is [AIEEE 2004] 0.02 M 0.01 M M 0.1 M 2 1 (Avgadr cnstant, ml ) N A 91. The numer f mles f SO 2Cl2 in 1.5gm is [CPMT 1994] The weight f C O. H O required t prepare 500 ml f H N slutin is [EAMCET 1991] 126 g 12.6g 6 g 6.g 9. In a slutin f 7.8 gm enzene C 6 H 6 and 46.0 gm tluene ( C 6H5CH ), the mle fractin f enzene in this slutin is 1 / 6 1 / 5 1 / 2 1 / 94. A slutin cntains 25 %H 2 O, 25 % C 2 H 5 OH and 50 %CH COOH y mass. The mle fractin f H 2 O wuld e A 5 mlar slutin f H 2SO4 is diluted frm 1 litre t 10 litres. What is the nrmality f the slutin [AFMC 2005] 0.25 N 1 N 2 N 7 N 96. Mlarity f a slutin cntaining 1 g NaOH in 250 ml f slutin is [EAMCET 1990] 0.1M 1 M 0.01M 0.001M 97. What is mlarity f a slutin f HCl which cntains 49% y weight f slute and whse specific gravity is 1.41 [CPMT 2001; CBSE PMT 2001] NaClO slutin reacts with H 2SO as, NaClO H 2SO NaCl H 2SO4. A slutin f NaClO used in the ave reactin cntained 15g f NaClO per litre. The nrmality f the slutin wuld e [AMU 1999] A slutin cntains hydrchlric acid mlecules in ne dm f the slutin. The strength f the slutin is [KCET 2004] 6 N 2 N 4 N 8 N N and N slutin is called 10 slutin is very nearly equal t which f the fllwing Decinrmal [BITS 1992] and decanrmal slutin 0.01% CH OH 0.01m CH OH Nrmal and decinrmal slutin Nrmal and decanrmal slutin x CH OH 0.99M H 2 O Decanrmal and decinrmal slutin 101. When 7.1gm Na 2SO 4 (mlecular mass 142) disslves in 100 ml H 2O, the mlarity f the slutin is [CBSE PMT 1991; MP PET 199, 95] 2.0 M 1.0 M 0.5 M 0.05 M 102. Mlarity f 4% NaOH slutin is [EAMCET 1987] 0.1M 0.5M 0.01M 1.0M 10. When 6 gm urea disslve in 180 gmh 2 O. The mle fractin f urea is [CPMT 1988]

6 The nrmality f 10% (weight/vlume) acetic acid is [CPMT 198] 1 N 10 N 1.7 N 0.8 N 105. Unit f mle fractin is [BHU 1998, 2005] Mles/litre Mles/litre2 Mles litre Dimensinless 106. Nrmality f 2 M sulphuric acid is [AIIMS 1991, 92; P. CET 2002] 2 N 4 N N / 2 N / Mlar cncentratin (M) f any slutin = N. f mles f slute Vlume f slutininlitre N. f gram equivalent f slute Vlume f slutininlitre N. f mles f slute Mass f slventin kg N. f mles f any cnstituent Ttal n. f mles f all cnstituents Slutin and Clligative prperties If 5.0gm f BaCl 2 is present in 10 gm slutin, the cncentratin is 1 ppm 5 ppm 50 ppm 1000 ppm 122. Mlecular weight f urea is 60. A slutin f urea cntaining 6 g Mlar slutin cntains [DPMT 2002] urea in ne litre is [BHU 1996, 99] 1000g f slute 1000g f slvent 1 mlar 1.5 mlar 1 litre f slvent 1 litre f slutin 0.1 mlar 0.01 mlar 110. T neutralise cmpletely 20 ml f 0.1 M aqueus slutin f 12. The mlar slutin f sulphuric acid is equal t [MP PET 1999] phsphrus acid ( H PO ), the vlume f 0.1 M aqueus KOH slutin required is [AIEEE 2004] N slutin 2N slutin 40 ml 20 ml N / 2 slutin N slutin 10 ml 60 ml 124. The weight f sdium carnate required t prepare 500 ml f a 111. On disslving 1 mle f each f the fllwing acids in 1 litre water, semi- nrmal slutin is [JIPMER 1999] the acid which des nt give a slutin f strength 1 N is 1.25 [MP PET g 199] 26.5 g 5 g g HCl Perchlric acid ml f a slutin cntains 5.85 g disslved sdium chlride. HNO Phsphric acid The cncentratin f the slutin will e ( Na 2; Cl 5.5) [MP PMT Hw many grams f NaOH will e required t neutralize mlar 2 mlar grams f enzic acid [MP PMT 1999] 0.5 mlar 0.25 mlar 40 gms 4 gms 126. Mlarity f a slutin prepared y disslving 75.5 g f pure KOH in 16 gms 12.2 gms 540 ml slutin is [BHU 1999].05 M 1.5 M ml f cnc. H 2SO4 (18 mlar) is diluted t 1 litre. The 2.50 M 4.50 M apprximate strength f dilute acid culd e [JIPMER 1991] 127. Which ne f the fllwing is an extensive prperty 0.18 N 0.09 N [KCET 1998] 0.6 N 1800 N Mlar vlume Mlarity 114. The nrmality f 10 lit. vlume hydrgen perxide is Numer f mles Mle fractin [Kerala CET (Med.) 200] Additin f cnc. HCl t saturated BaCl 2 slutin precipitates BaCl 2 ; ecause [AMU 2000] (e) 17.8 It fllws frm Le Chatelier s principle 115. Essential quantity f ammnium sulphate taken fr preparatin f 1 mlar slutin in 2 litres is Of cmmn-in effect 12 gm 264 gm 198 gm 212 gm 116. In a mixture f 1 gm H 2 and 8 gm O 2, the mle fractin f hydrgen is [Orissa JEE 2002] A slutin f CaCl 2 is in in Nne f these 0.5 ml / litre, then the mles f chlride 500 ml will e [MP PMT 1986] What is the mlarity f H 2SO4 slutin, that has a density 1.84 gm/cc at 5 C and cntains slute 98% y weight [AIIMS 2001] (a] 4.18 M 8.14 M 18.4 M 18 M 119. A certain aqueus slutin f FeCl (frmula mass =162) has a density f 1.1g / ml and cntains 20.0% FeCl. Mlar cncentratin f this slutin is [P. PMT 1998] If 0.50 ml f CaCl 2 is mixed with 0.20 ml f Na PO4, the maximum numer f mles f Ca (PO4 ) 2 which can e frmed, is [P. PMT 1998] An X mlal slutin f a cmpund in enzene has mle fractin f slute equal t 0.2. The value f X is [KCET 1996; DCE 2001] Inic prduct ( Ba ), ( Cl ) remains cnstant in a saturated slutin At cnstant temperature, the prduct ( Ba ), cnstant in a saturated slutin 2 2 ( Cl ) remains

7 166 Slutin and Clligative prperties 129. Hw much water is needed t dilute 10 ml f 10 N hydrchlric acid t make it exactly decinrmal (0.1 N) [EAMCET 1982] 990 ml 1000 ml 1010 ml 100 ml 10. The frmula weight f H 2SO4 is 98. The weight f the acid in 400 ml f 0.1M slutin is [EAMCET 1987] 2.45 g.92 g 4.90 g 9.8 g 11. The mlarity f pure water is [CPMT 1974, 88, 90; CMC Vellre 1991; RPET 1999; NCERT 1974, 76; MP PMT 1999; AMU 2002] The mlarity f a 0.2 N Na 2CO slutin will e [MP PMT 1987; P. CET 2004] 0.05 M 0.2 M 0.1 M 0.4 M 1. Hw many mles f water are present in 180 g f water 1 mle 10 mle 14. If we take 44 g f CO 2 and [JIPMER 1991; DPMT 1982; Manipal MEE 1995] 18 mle 100 mle 14 g f N 2 what will e mle fractin f CO 2 in the mixture [KCET 1990] 1/5 1/ 2/ 1/4 15. What is the vlume f 0.1 N HCl required t react cmpletely with 1.0g f pure calcium carnate ( Ca 40, C 12 and O 16) [KCET 1998] 150cm 200cm 250cm 100cm 16. The amunt f NaOH in gms in M NaOH slutin wuld e 4 gm 2 gm 1 gm 2.5 gm 250cm f a gm f NaOH are cntained in ne decilitre f slutin. Its mlarity wuld e 4 M 2 M 1 M 1.5 M 18. When 90 gm f water is mixed with 00 gm f acetic acid. The ttal numer f mles will e A mlal slutin is ne that cntains ne mle f a slute in [NCERT 198; DPMT 198; CPMT 1985; IIT 1986; MP PMT 1987; EAMCET 1990; MP PET 1994, 99] 1000 gm f the slvent One litre f the slvent One litre f the slutin 22.4 litres f the slutin 140. What weight f ferrus ammnium sulphate is needed t prepare 100 ml f 0.1 nrmal slutin (ml. wt. 92) 9.2 gm.92 gm [CPMT 198] 1.96 gm 19.6 gm 141. If 18 gm f glucse ( C 6H12O6 ) is present in 1000 gm f an aqueus slutin f glucse, it is said t e [CPMT 1986] 1 mlal 1.1 mlal 0.5 mlal 0.1 mlal 142. The numer f mles f KCl in 1000 ml f mlar slutin is The unit f mlality is [P. CET 200] Mle per litre Mle per kilgram Per mle per litre Mle litre 144. A slutin cntains 1 mle f water and 4 mle f ethanl. The mle fractin f water and ethanl will e 0.2 water ethanl 0.4 water ethanl 0.6 water ethanl 0.8 water ethanl Clligative prperties 1. The magnitude f clligative prperties in all cllidal dispersins is.than slutin [AMU 1999] Lwer Bth Higher Nne 2. Equimlar slutins in the same slvent have [AIEEE 2005] Same iling pint ut different freezing pint Same freezing pint ut different iling pint Same iling and same freezing pints Different iling and different freezing pints. Which f the fllwing is a clligative prperty [AFMC 1992; CBSE PMT 1992; MP PMT 1996, 200] Osmtic pressure Biling pint Vapur pressure Freezing pint 4. The clligative prperties f a slutin depend n [CPMT 1984; MP PMT 199; UPSEAT 2001; Kerala PMT 2002] Nature f slute particles present in it Nature f slvent used Numer f slute particles present in it Numer f mles f slvent nly 5. Which f the fllwing is nt a clligative prperty [BHU 1982; CPMT 1988; DPMT 1985; MP PET 1999] Osmtic pressure Elevatin in B.P. Vapur pressure Depressin in freezing pint 6. Which f the fllwing is nt a clligative prperty [MP PET 2001; CPMT 2001; P. CET 2001] Optical activity Elevatin in iling pint Osmtic pressure Lwering f vapur pressure 7. Clligative prperties f a slutin depends upn [MP PMT 1994, 2002] Nature f th slvent and slute

8 Slutin and Clligative prperties 167 The relative numer f slute and slvent particles Nature f slute nly Nature f slvent nly 8. Which is nt a clligative prperty [CPMT 1984; BHU 1982; Manipal MEE 1995] Refractive index Lwering f vapur pressure Depressin f freezing pint Elevatin f iling pint 9. Which f the fllwing is a clligative prperty [BHU 1990; NCERT 198; MP PMT 198; DPMT 1981, 8; MP PET/PMT 1998; AIIMS 1999; P. CET 2000] Surface tensin Viscsity Osmtic pressure Optical rtatin 10. Clligative prperties are used fr the determinatin f [Kerala CET (Engg.) 2002] Mlar Mass Equivalent weight Arrangement f mlecules Melting pint and iling pint Bth and 11. What des nt change n changing temperature [DCE 2001] Mle fractin Nrmality Mlality Nne f these Lwering f vapur pressure 1. Vapur pressure f CCl 4 at 25 is 14 mm f Hg0. 5 gm f a nn-vlatile slute (ml. wt. = 65) is disslved in 100ml CCl 4. Find the vapur pressure f the slutin (Density f 4.58 g / 2 C CCl 1 cm ) [CBSE PMT 1998] 141.4mm 94.9mm 199.4mm 14.99mm 2. Fr a slutin f vlatile liquids the partial vapur pressure f each cmpnent in slutin is directly prprtinal t Mlarity Mle fractin Mlality Nrmality. The relative lwering f the vapur pressure is equal t the mle fractin f the slute. This law is called [MP PET 1997, 2001] Henry's law Rault's law Ostwald's law Arrhenius's law 4. The relative lwering f vapur pressure prduced y disslving 71.5 g f a sustance in 1000 g f water is The mlecular weight f the sustance will e [DPMT 2001] When mercuric idide is added t the aqueus slutin f ptassium idide, the [IIT 1987] Freezing pint is raised Freezing pint is lwered Freezing pint des nt change Biling pint des nt change 6. Vapur pressure f a slutin is [EAMCET 1988; MP PET 1994] Directly prprtinal t the mle fractin f the slvent Inversely prprtinal t the mle fractin f the slute Inversely prprtinal t the mle fractin f the slvent Directly prprtinal t the mle fractin f the slute 7. When a sustance is disslved in a slvent the vapur pressure f the slvent is decreased. This results in [NCERT 1981] An increase in the.p. f the slutin A decrease in the.p. f the slvent The slutin having a higher freezing pint than the slvent The slutin having a lwer smtic pressure than the slvent 8. If P and P are the vapur pressure f a slvent and its slutin respectively and N 1 and N 2 are the mle fractins f the slvent and slute respectively, then crrect relatin is P P N1 P P N 2 P P N 2 P P ( N 1 / N2) 9. An aqueus slutin f methanl in water has vapur pressure Equal t that f water Equal t that f methanl Mre than that f water Less than that f water 10. The pressure under which liquid and vapur can cexist at equilirium is called the Limiting vapur pressure Real vapur pressure Nrmal vapur pressure Saturated vapur pressure 11. Which slutin will shw the maximum vapur pressure at 00 K 1 M C 12 H 22O11 1 M CH COOH 1 M NaCl 2 1 M NaCl 12. The relative lwering f the vapur pressure is equal t the rati etween the numer f [EAMCET 1991; CBSE PMT 1991] Slute mleules and slvent mlecules Slute mlecules and the ttal mlecules in the slutin Slvent mlecules and the ttal mlecules in the slutin Slvent mlecules and the ttal numer f ins f the slute 1. 5cm f acetne is added t 100cm f water, the vapur pressure f water ver the slutin It will e equal t the vapur pressure f pure water It will e less than the vapur pressure f pure water It will e greater than the vapur pressure f pure water It will e very large 14. At 00 K, when a slute is added t a slvent its vapur pressure ver the mercury reduces frm 50 mm t 45 mm. The value f mle fractin f slute will e A slutin has a 1 : 4 mle rati f pentane t hexane. The vapur pressure f the pure hydrcarns at 20 C are 440 mmhg fr pentane and 120 mmhg fr hexane. The mle fractin f pentane in the vapur phase wuld e [CBSE PMT 2005] Benzene and tluene frm nearly ideal slutins. At 20 C, the vapur pressure f enzene is 75 trr and that f tluene is 22 trr. The parial vapur pressure f enzene at 20 C fr a slutin cntaining 78g f enzene and 46g f tluene in trr is [AIEEE 2005] 50 25

9 168 Slutin and Clligative prperties The vapur pressure lwering caused y the additin f 100 g f sucrse(mlecular mass = 42) t 1000 g f water if the vapur pressure f pure water at 25 C is 2.8 mm Hg [RPET 1999] 1.25 mm Hg mm Hg 1.15 mm Hg mm Hg 18. Which f the fllwing is incrrect [J & K 2005] Relative lwering f vapur pressure is independent The vapur pressure is a clligative prperty Vapur pressure f a slutin is lwer than the vapur pressure f the slvent The relative lwering f vapur pressure is directly prpertinal t the riginal pressure 19. Amng the fllwing sustances the lwest vapur pressure is exerted y Water Mercury Kersene Rectified spirit 20. Accrding t Rault's law the relative lwering f vapur pressure f a slutin f vlatile sustance is equal t [CBSE PMT 1995; BHU 2001] Mle fractin f the slvent Mle fractin f the slute Weight percentage f a slute Weight percentage f a slvent 21. When a sustance is disslved in a slvent, the vapur pressure f the slvent is decreased. This results in [MP PMT 198; NCERT 1981] An increase in the iling pint f the slutin A decrease in the iling pint f slvent The slutin having a higher freezing pint than the slvent The slutin having a lwer smtic pressure than the slvent 22. The vapur pressure f a liquid depends n Temperature ut nt n vlume Vlume ut nt n temperature Temperature and vlume Neither n temperature nr n vlume 2. Which ne f the statements given elw cncerning prperties f slutins, descries a clligative effect [AIIMS 200] Biling pint f pure water decreases y the additin f ethanl Vapur pressure f pure water decreases y the additin f nitric acid Vapur pressure f pure enzene decreases y the additin f naphthalene Biling pint f pure enzene increases y the additin f tluene 24. The atmspheric pressure is sum f the [Kerala CET (Med.) 2002] Pressure f the imlecules Vapur pressure f atmspheric cnstituents Vapur pressure f chemicals and vapur pressure f vlatiles Pressure created n t atmspheric mlecules 25. The vapur pressure f pure liquid A is 0.80 atm. On mixing a nnvlatile B t A, its vapur pressure ecmes 0.6 atm. The mle fractin f B in the slutin is [MP PET 200] Lwering f vapur pressure is highest fr [BHU 1997] Urea 0.1M glucse 0.1M MgSO4 0.1M BaCl2 27. An aqueus slutin f glucse was prepared y disslving 18 g f glucse in 90 g f water. The relative lwering in vapur pressure is [KCET 2002] Relative lwering in vapur pressure f slutin cntaining nnvlatile slute is directly prprtinal t mle fractin f slute. Ave statement is [AFMC 2004] Henry law Dulng and Petit law Rault's law Le-Chatelier's principle 29. An ideal slutin was tained y mixing methanl and ethanl. If the partial vapur pressure f methanl and ethanl are 2.619kPa and 4.556kPa respectively, the cmpsitin f the vapur (in terms f mle fractin) will e [P. PMT 1998] 0.65 methanl, 0.65 ethanl 0.65 methanl, 0.65 ethanl methanl, 0.26 ethanl 0.17 methanl, ethanl 0. The vapur pressure f tw liquids P and Q are 80 and 600 trr, respectively. The ttal vapur pressure f slutin tained y mixing mle f P and 2 mle f Q wuld e [CBSE PMT 2005] 140 trr 20 trr 68 trr 72 trr 1. The vapur pressure f enzene at a certain temperature is 640 mm f Hg. A nn-vlatile and nn-electrlyte slid weighing 2.175g is added t 9.08g f enzene. The vapur pressure f the slutin is 600 mm f Hg. What is the mlecular weight f slid sustance [CBSE PMT 1999; AFMC 1999] Which ne f the fllwing is the expressin f Rault's law p p p s p p p s s n n N N N n p vapur pressure f pure slvent p s vapur pressure f the slutin p s p N p N n p s p N n p N n numer f mles f the slute N numer f mles f the slvent. Which has maximum vapur pressure [DPMT 2001] HI HBr HCl HF 4. When a nn-vlatile slute is disslved in a slvent, the relative lwering f vapur pressure is equal t [BHU 1979; IIT 198] Mle fractin f slute Mle fractin f slvent Cncentratin f the slute in grams per litre Cncentratin f the slute in grams 100 ml gm f Urea (Ml. wt 60) was disslved in 9.9 mles, f water. If the vapur pressure f pure water is P, the vapur pressure f slutin is [DCE 2000] 0.10 P 1.10 P 0.90 P 0.99 P 6. The vapur pressure f water at C 20 is mm. When 20g f a nn-inic, sustance is disslved in 100g f water, the vapur s

10 pressure is lwered y 0.0 mm. What is the mlecular weight f the sustances [UPSEAT 2001] In an experiment, 1 g f a nn-vlatile slute was disslved in 100 g f acetne (ml. mass = 58) at 298K. The vapur pressure f the slutin was fund t e mm Hg. The mlecular weight f the slute is (vapur pressure f acetne = 195 mm Hg) [CPMT 2001; CBSE PMT 2001; P CET 2002] Hw many grams f CH OH shuld e added t water t prepare 150 ml slutin f 2 CH OH [CBSE PMT 1994] M The vapur pressure f a slvent decreased y 10 mm f mercury, when a nn-vlatile slute was added t the slvent. The mle fractin f the slute in the slutin is 0.2. What shuld e the mle fractin f the slvent, if decrease in the vapur pressure is t e 20 mm f mercury Slutin and Clligative prperties An ideal slutin is that which [MP PMT 1996] [CBSE PMT 1998] Shws psitive deviatin frm Rault's law Shws negative deviatin frm Rault's law Has n cnnectin with Rault's law 40. Fr a dilute slutin, Rault's law states that Oeys Rault's law [CPMT 1987; BHU 1979; IIT 1985; MP PMT 2004; MNR 1988; AMU 2002] 6. Which ne f the fllwing mixtures can e separated int pure cmpnents y fractinal distillatin [CPMT 1987] The lwering f vapur pressure is equal t mle fractin f slute Benzene tluene Water ethyl alchl The relative lwering f vapur pressure is equal t mle fractin f slute 7. Water nitric acid All frm ideal slutins except Water hydrchlric acid [DPMT 198; MP PET 1997] The relative lwering f vapur pressure is prprtinal t the amunt f slute in slutin C 2 H 5 Br and C 2 H 5 I C 6 H 5 Cl and C 6 H 5 Br The vapur pressure f the slutin is equal t the mle C 6 H 6 and C 6H5CH C 2 H 5 I and C 2 H 5 OH fractin f slvent 8. Which prperty is shwn y an ideal slutin 41. The vapur pressure f a slvent A is 0.80 atm When a nn-vlatile [MP PET 2002] sustance B is added t this slvent its vapur pressure drps t 0.6 atm. What is mle fractin f B in slutin It [MP fllws PMT Rault's 2000, 01] law H mix V mix 0 All f these 42. Determinatin f crrect mlecular mass frm Rault's law is 9. When tw liquid A and B are mixed then their iling pints applicale t ecmes greater than th f them. What is the nature f this slutin An electrlyte in slutin Ideal slutin A nn-electrlyte in a dilute slutin Psitive deviatin with nn ideal slutin A nn-electrlyte in a cncentrated slutin Negative deviatin with nn ideal slutin An electrlyte in a liquid slvent Nrmal slutin 4. 0 If tw sustances A and B have P : 0 1: 2 and have mle 10. In mixture A and B cmpnents shw ve deviatin as A P B 1. Which f the fllwing liquid pairs shws a psitive deviatin frm Rault's law [MP PET 199; UPSEAT 2001; AIEEE 2004] Water-nitric acid Benzene-methanl Water-hydrchlric acid Acetne-chlrfrm 2. Which ne f the fllwing is nn-ideal slutin Benzene + tluene n -hexane + n -heptane Ethyl rmide + ethyl idide CCl 4 CHCl. A nn ideal slutin was prepared y mixing 0 ml chlrfrm and 50 ml acetne. The vlume f mixture will e [P. CET 200] > 80 ml < 80 ml = 80 ml 80 ml 4. Which pair frm the fllwing will nt frm an ideal slutin CCl 4 SiCl4 H 2O C4 H9OH C 5 2H5Br C2H I C6H14 C7H16 fractin in slutin 1 : 2 then mle fractin f A in vapurs [DPMT 2005] V mix H mix A dry air is passed thrugh the slutin, cntaining the 10 gm f A-B interactin is weaker than A-A and B-B interactin slute and 90 gm f water and then it pass thrugh pure water. A-B interactin is strng than A-A and B-B interactin There is the depressin in weight f slutin wt y 2.5 gm and in 11. In which case Rault's law is nt applicale weight f pure slvent y 0.05 gm. Calculate the mlecular weight f slute [Kerala CET 2005] 1 M NaCl 1 M urea M glucse 1 M sucrse A slutin that eys Rault's law is [EAMCET 199] (e) 51 Nrmal Mlar Ideal Saturated Ideal and Nn-ideal slutin 1. An example f near ideal slutin is n -heptane and n -hexane [AIEEE 2002]

11 170 Slutin and Clligative prperties CH COOH C5H5 N [JIPMER 1997] S CHCl ( C2H5) 2 O mix 0 H mix 0 It eys Rault's law V H 2O HNO mix Which f the fllwing des nt shw negative deviatin frm 14. A mixture f liquid shwing psitive deviatin in Rault's law is Rault s law [MP PMT 2001] ( CH ) 2 CO C2H5OH ( CH ) 2 CO CHCl Acetne-Chlrfrm Acetne-Benzene 15. ( C2 H5) 2 O CHCl ( CH ) 2 CO C6H5 NH Chlrfrm-Ether Chlrfrm-Benzene A mixture f enzene and tluene frms [MP PMT 199] All frm ideal slutin except [UPSEAT 2001] An ideal slutin Nn-ideal slutin C 2 H 5 Br and C 2 H 5 I C 2 H 5 Cl and C 6 H 5 Br Suspensin Emulsin C 6H6 and C 6H5CH C 2 H 5 I and C 2 H 5 OH 28. Which f the fllwing is an ideal slutin 16. Frmatin f a slutin frm tw cmpnents can e cnsidered as Water + ethanl [CBSE PMT 200] Chlrfrm + carn tetrachlride (i) Pure slvent separated slvent mlecules H1 Benzene + tluene (ii) Pure slute separated slute mlecules H2 Water + hydrchlric acid (iii) Separated slvent and slute mlecules slutin H 29. When ethanl mixes in cyclhexane; cyclhexane reduces the Slutin s frmed will e ideal if intermlecular frces etween ethanl mlecule. In this, liquid pair Hsln H H1 H shws 2 Psitive deviatin y Rault's law Hsln H1 H 2 H Negative deviatin y Rault's law Hsln H1 H 2 H N deviatin y Rault's law Decrease in vlume Hsln H1 H 2 H 0. Liquids A and B frm an ideal slutin [AIEEE 200] 17. Identify the mixture that shws psitive deviatin frm Rault s law [Kerala CET (Engg.) 2002] The enthalpy f mixing is zer CHCl ( CH ) 2 CO ( CH ) 2 CO C6H5 NH 2 The entrpy f mixing is zer The free energy f mixing is zer CHCl C6H6 ( CH ) 2 CO CS 2 The free energy as well as the entrpy f mixing are each zer (e) C6H5 N CH COOH 18. When acetne is added t chlrfrm, then hydrgen nd is frmed etween them.these liquids shw Azetrpic mixture Psitive deviatin frm Rault's law 1. The azetrpic mixture f water (. p.100 C) and Negative deviatin frm Rault's law HCl (. p.85 C) ils at C. When this mixture is N deviatin frm Rault's law distilled it is pssile t tain [IIT 1981] Vlume is slightly increased 19. Which f the fllwing is true when cmpnents frming an ideal Pure HCl slutin are mixed [AMU 2000] Pure water H m Vm 0 Hm Vm Pure water as well as pure HCl m m H V H V The liquid pair enzene-tluene shws [MP PET 1995] Irregular deviatin frm Rault's law Negative deviatin frm Rault's law Psitive deviatin frm Rault's law Practically n deviatin frm Rault's law 21. The slutin which shws negative r psitive deviatin y Rault's law, is called Ideal slutin Real slutin Nn-ideal slutin Cllidal slutin 22. Which f the fllwing des nt shw psitive deviatin frm Rault s law [MP PMT 2000] Benzene-Chlrfrm Benzene-Acetne Benzene-Ethanl Benzene-Carn tetrachlride 2. Which f the fllwing mixture shws psitive deviatin y ideal ehaviur CHCl ( CH ) 2 CO C6H6 C6H5CH H 2 O HCl CCl 4 CHCl 24. Which prperty is nt fund in ideal slutin P A A P X H 0 A V mix 0 All f these 25. Which f the fllwing is nt crrect fr ideal slutin m mix m Neither HCl nr H 2 O in their pure states 2. An azetrpic slutin f tw liquids has iling pint lwer than either when it [NCERT 1978; IIT 1981] Shws a negative deviatin frm Rault's law Shws n deviatin frm Rault's law Shws psitive deviatin frm Rault's law Is saturated. A liquid mixture ils withut changing cnstituent is called [DPMT 1982; CPMT 1987] Stale structure cmplex Binary liquid mixture Zetrpic liquid mixture Azetrpic liquid mixture 4. Azetrpic mixture are [CPMT 1982] Cnstant temperature iling mixtures Thse which ils at different temperatures Mixture f tw slids Nne f the ave 5. A mixture f tw cmpletely miscile nn-ideal liquids which distil as such withut change in its cmpsitin at a cnstant temperature as thugh it were a pure liquid. This mixture is knwn as Binary liquid mixture Azetrpic mixture

12 Eutectic mixture Ideal mixture Osmsis and Osmtic pressure f the slutin 1. If gm f glucse (ml. wt. 180) is disslved in 60 gm f water at 15 C. Then the smtic pressure f this slutin will e Nne [MP f PMT these 1986] 0.4 atm 0.65 atm 6.57 atm 5.57 atm 2. The cncentratin in gms per litre f a slutin f cane sugar ( M 42) which is istnic with a slutin cntaining 6 gms f urea ( M 60) per litre is [Orissa PMT 1989]. Osmtic pressure is atm at temperature f 00 K. Find cncentratin in mle/litre [Rrkee 1990] Osmtic pressure f a slutin cntaining 0.1 mle f slute per litre at 27 K is (in atm) [CPMT 1988] Slutin and Clligative prperties A slutin cntains nn-vlatile slute f mlecular mass M p atm 4.92 atm Which f the fllwing can e used t calculate mlecular mass f 4.04 atm 5.2 atm the slute in terms f smtic pressure (m = Mass f slute, V = Vlume f slutin and = Osmtic pressure) 15. Bld has een fund t e istnic with Nrmal [CBSE saline PMT 2002] slutin [CPMT 1994] m Mp VRT m RT Mp V m m Mp Mp RT V RT V 6. The smtic pressure f a 5% (wt/vl) slutin f cane sugar at 150 C is [AMU 1999] 2.45 atm atm.4 atm 4 atm 7. The relatinship etween smtic pressure at 27 K when 10 g glucse ( P 1 ), 10g urea P ) and 10 g sucrse P ) are disslved in ( ml f water is [CBSE PMT 1996] ( P1 P2 P P P1 P2 P2 P1 P P2 P P M NaCl Cnc. NaCl 8. In smsis [DPMT 1985] 50 % NaCl 0 % NaCl Slvent mlecules mve frm higher cncentratin t lwer 19. Which inrganic precipitate acts as semipermeale memrane r cncentratin The chemical cmpsitin f semipermeale memrane is[cpmt 1984, 90; MP PM Slvent mlecules mve frm lwer t higher cncentratin Slute mlecules mve frm higher t lwer cncentratin Calcium sulphate Nickel phsphate Barium xalate Cpper ferrcyanide Slute mlecules mve frm lwer t higher cncentratin 20. The smtic pressure f 1 m slutin at 27 C is [CPMT 1999] 9. Semipermeale memrane is that which permits the passage f[bhu 1979; CPMT 1977, 84, ; MP atm PMT 1994] 24.6 atm Slute mlecules nly Slvent mlecules nly Slute and slvent mlecules th Neither slute nr slvent mlecules 10. Tw slutins A and B are separated y semi- permeale memrane. If liquid flws frm A t B then [MH CET 2000] A is less cncentrated than B A is mre cncentrated than B Bth have same cncentratin 11. A 5% slutin f canesugar (ml. wt. =42) is istnic with 1% slutin f a sustance X. The mlecular weight f X is [ Which f the fllwing clligative prperties can prvide mlar mass f prteins (r plymers r cllids) with greater precisin[kerala PMT 2004] Relative lwering f vapur pressure Elevatin f iling pint Depressin in freezing pint Osmtic pressure (e) Rast's methd 1. The average smtic pressure f human ld is 7.8 ar at 7 C. What is the cncentratin f an aqueus NaCl slutin that culd e used in the ld stream [AIIMS 2004] 0.16 ml / L 0.2 ml / L 0.60 ml / L 0.45 ml / L 14. A slutin f sucrse(mlar mass = 42 g/ml) is prepared y disslving 68.4 g f it per litre f the slutin, what is its smtic 1 1 pressure (R = lit. atm. k ml ) at 27k [UPSEAT 2001] Saturated NaCl slutin Saturated KCl slutin Saturated slutin f a 1 : 1 mixture f NaCl and KCl 16. If 20 g f a slute was disslved in 500 ml f water and smtic are mixed then the smtic pressure f the resultant slutin will e[mp PMT 19 pressure f the slutin was fund t e 600 mm f Hg at 15 C, then mlecular weight f the slute is [BHU 2004] The smtic pressure f 0.4% urea slutin is 1.66 atm and. that f a slutin f suger f.42 % is 2.46 atm. When th the slutin 1.64 atm 2.46 atm 2.06 atm 0.82 atm 18. Bld is istnic with [DCE 2000] 1.21 atm 12.1 atm 21. Osmtic pressure f a slutin can e measured quickly and accurately y [JIPMER 1991; CPMT 198] Berkeley and Hartley's methd

13 172 Slutin and Clligative prperties Mrse's methd Pfeffer's methd De Vries methd 22. The slutin in which the ld cells retain their nrmal frm are with regard t the ld [CBSE PMT 1991] Istnic Ismtic Hypertnic Equinrmal 2. The smtic pressure f a slutin is given y the relatin [CPMT 198, 84, 87, 9, 94] RT P C CT P R RC P P RT T C 24. The smtic pressure f a slutin is directly prprtinal t The mlecular cncentratin f slute The aslute temperature at a given cncentratin The lwering f vapur pressure All f the ave 25. What wuld happen if a thin slice f sugar eet is placed in a cncentrated slutin f NaCl [CMC Vellre 1986] Sugar eet will lse water frm its cells Sugar eet will asr water frm slutin Sugar eet will neither asr nr lse water Sugar eet will disslve in slutin 26. The smtic pressure f a dilute slutin is given y [MP PMT 1987] P P x V nrt P P N 2 P P P P P 27. Which statement is wrng regarding smtic pressure (P), vlume (V) and temperature (T) [MP PMT 1985] 1 P if T is cnstant V P T if V is cnstant P V if T is cnstant PV is cnstant if T is cnstant 28. Istnic slutins have [DPMT 1984; MP PMT 1986] Equal temperature Equal smtic pressure Equal vlume Equal amunt f slute 29. Which f the fllwing assciated with istnic slutins is nt crrect [AMU 2002] They will have the same smtic pressure They have the same weight cncentratins Osmsis des nt take place when the tw slutins are separated y a semipermeale memrane They will have the same vapur pressure 0. Istnic slutin have the same [EAMCET 1979; JIPMER 1991, 2002; AFMC 1995; MP PMT 2002] Density Mlar cncentratin Nrmality Nne f these 1. A 0.6% slutin f urea (mlecular weight = 60) wuld e istnic with [NCERT 1982; DCE 2002] 0.1M glucse 0.1M KCl 0.6% glucse slutin 0.6% KCl slutin 2. The value f smtic pressure f a 0.2 M aqueus slutin at 29K is [AMU 2002] 8.4 atm 0.48atm 4.8 atm 4.0 atm. Diffusin f slvent thrugh a semi permeale memrane is called Diffusin Osmsis Active asrptin Plasmlysis 4. Slutins having the same smtic pressure under a given set f cnditins are knwn as [BHU 1979; EAMCET 1979; CPMT 1990; MP PMT 1999; AFMC 1999, 2001] Hypertnic Hyptnic Nrmal Istnic 5. At lw cncentratins, the statement that equimlal slutins under a given set f experimental cnditins have equal smtic pressure is true fr [EAMCET 1979; BHU 1979] All slutins Slutins f nn-electrlytes nly Slutins f electrlytes nly Nne f these 6. Which ne f the fllwing wuld lse weight n expsure t atmsphere [NCERT 1975] Cncentrated H 2SO4 Slid NaOH A saturated slutin f CO 2 Anhydrus sdium carnate 7. The mlecular weight f NaCl determined y smtic pressure methd will e Same as theritical value Higher than theritical value Lwer than theritical value Nne f these 8. The smtic pressure f slutin increases, if [CPMT 1985, 87, 91] Temperature is decreased Slutin cncentratin is increased Numer f slute mlecules is increased Vlume is increased 9. At the same temperature, fllwing slutin will e istnic [MP PMT 1985].24 gm f sucrse per litre f water and 0.18 gm glucse per litre f water.42 gm f sucrse per litre and 0.18 gm glucse in 0.1 litre water.24 gm f sucrse per litre f water and gm f sdium chlride per litre f water.42 gm f sucrse per litre f water and 1.17 gm f sdium chlride per litre f water 40. The smtic pressure f a decinrmal slutin f BaCl 2 in water is Inversely prprtinal t its celsius temperature Inversely prprtinal t its aslute temperature Directly prprtinal t its celsius temperature Directly prprtinal t its aslute temperature 41. Bld cells will remain as such in [CPMT 2004] Hypertnic slutin Hyptnic slutin Istnic slutin Nne f these 42. The smtic pressure f a dilute slutin is directly prprtinal t the [MP PMT 1987] Diffusin rate f the slute Inic cncentratin Elevatin f B.P.

14 Flw f slvent frm a cncentrated t a dilute slutin 4. The smtic pressure in atmspheres f 10% slutin f canesugar at 69 C is [AFMC 1991] Which f the fllwing mlecules wuld diffuse thrugh a cell memrane [NCERT 1978] Fructse Glycgen Haemglin Catalase 48. If a 0.1M slutin f glucse (ml. wt. 180) and 0.1mlar slutin f urea (ml. wt. 60) are placed n the tw sides f a semipermeale memrane t equal heights, then it will e crrect t say [CBSE PMT 1992] There will e n net mvement acrss the memrane Glucse will flw acrss the memrane int urea slutin Urea will flw acrss the memrane int glucse slutin Water will flw frm urea slutin int glucse slutin 49. At cnstant temperature, the smtic pressure f a slutin [CPMT 1986] Directly prprtinal t the cncentratin Inversely prprtinal t the cncentratin Directly prprtinal t the square f the cncentratin Directly prprtinal t the square rt f the cncentratin 50. The slutin cntaining 4.0gm f a plyvinyl chlride plymer in 1 litre f dixane was fund t have an smtic pressure atmsphere at 00 K, the value f R used is litre atmsphere mle k. The mlecular mass f the plymer was fund t e [NCERT 1978] Slvent mlecules pass thrugh the semipermeale memrane is called [CPMT 198; MP PMT 1987; RPET 2000; DCE 2004] Electrlysis Electrphresis Cataphresis Osmsis 5 2 Slutin and Clligative prperties If mlecular weight f cmpund is increased then sensitivity is decreased in which f the fllwing methds [DCE 2001] Elevatin in iling pint Viscsity Osmsis Dialysis 5. If sluility f NaCl at 20 C is 5 gm per 100 gm f water. Then n adding 50 gm f NaCl t the same vlume at same temperature the salt remains undisslved is 15 gm 20 gm 50 gm 5 gm 45. Tw slutins f KNO and CH COOH are prepared separately. 54. Which f the fllwing assciated with istnic slutin is nt Mlarity f th is 0.1 M and smtic pressures are P 1 and P crrect 2 respectively. The crrect relatinship etween the smtic pressures is They will have the same smtic pressure [CPMT 198, 84; P CET 2004] They have the same weight cncentratin P2 P1 P1 P Osmsis des nt take place when the tw slutins are 2 separated y a semipermeale memrane P1 P2 P1 P2 They will have the same vapur pressure P1 P2 P1 P2 55. If smtic pressure f a slutin is 2 atm at 27 K, then at 46. The smtic pressure f a dilute slutin f a nn-vlatile slute is 546 K [JIPMER, the smtic 1999] pressure is Directly prprtinal t its temperature n the centigrade scale Inversely prprtinal t its temperature n the Kelvin scale 0.5 atm 2 atm 1 atm 4 atm Directly prprtinal t its temperature n the Kelvin scale 56. In smsis reactin, the vlume f slutin Inversely prprtinal t its temperature n the centigrade scale Decreases slwly Suddenly increases Increases slwly N change 47. Osmtic pressure f a urea slutin at 10 C is 500 mm. 57. As a result f smsis the vlume f slutin Osmtic pressure f the slutin ecme 105. mm. When it is [JIPMER 2000] diluted and temperature raised t 25 C. The extent f dilutin is Increases [MP PET 2004] Decreases 6 Times 5 Times Remains cnstant Increases r decreases 7 Times 4 Times 58. A slutin f urea cntain 8.6 gm/litre (ml. wt. 60.0). It is istnic with a 5% slutin f a nn-vlatile slute. The mlecular weight f the slute will e [MP PMT 1986] One mle each f urea, glucse and sdium chlride were disslved in ne litre f water Equal smtic pressure will e prduced y slutins f [MH CET 1999] Glucse and sdium chlride Urea and glucse Sdium chlride and urea Nne f these 60. Which f the fllwing aqueus slutins prduce the same smtic pressure [Rrkee 1999] 0.1 M NaCl slutin 0.1 M glucse slutin 0.6 g urea in 100 ml slutin 1.0 g f a nn-electrlyte slute (X) in 50 ml slutin (Mlar mass f X = 200) 61. Which f the fllwing aqueus slutins are istnic ( R atm K ml ) [Rrkee Qualifying 1998] 0.01M glucse 0.01M NaNO 500 ml slutin cntaining 0. g urea 0.04 N HCl Elevatin f iling int f the slvent 1. The latent heat f vapurisatin f water is 9700 Cal / mle and if the.p. is 100 C, eulliscpic cnstant f water is