108 SOALAN ULANGKAJI SPM Analysis. Chemistry [4541/1] [4541/2] [4541/3] JAWAPAN boleh didapati di laman web

Size: px

Start display at page:

Download "108 SOALAN ULANGKAJI SPM Analysis. Chemistry [4541/1] [4541/2] [4541/3] JAWAPAN boleh didapati di laman web"

Arleen Stevenson
6 years ago
Views:

1 108 SOLN ULNGKJI SPM 2012 [4541/1] [4541/2] [4541/3] nalysis hemistry

SOLN ULNGKJI SPM 2012 109 hemistry Paper 1 [4541/1] 1. iagram 1 shows the electron arrangement of an atom of element P. 5.

2 SOLN ULNGKJI SPM hemistry Paper 1 [4541/1] 1. iagram 1 shows the electron arrangement of an atom of element P. 5. What are the ions present in molten sodium chloride and sodium chloride aqueous solution? iagram 1 What is the number of valence electrons in atom P? P 6. Which of the following solutions can show a ph value of 8? What are the symbols of the elements of chromium, copper, manganese and potassium? 3. The following statement is about the arrangement of the elements in the Periodic Table of Elements. Elements are arranged in order of increasing atomic mass in The Periodic Table Which of the following scientists made the above statement? Meyer Mendeleev Newlands obereiner 4. iagram 2 shows the set-up of the apparatus for electrolysis. 0.1 mol dm -3 of ethanoic acid 0.1 mol dm -3 of hydrochloric acid 0.1 mol dm -3 of ammonia solutio 0.1 mol dm -3 of sodium hydroxide solution 7. Which of the following compounds is a soluble salt? Lead(II) iodide arium sulphate alcium chloride Magnesium carbonate 8. iagram 3 shows the stages involved in the ontact Process to produce sulphuric acid. iagram 3 Which of the following represent the temperature and the catalyst in stage 1? Temperature / o atalyst 450 Vanadium(V) oxide 200 Vanadium(V) oxide 450 Iron powder 300 Iron powder 9. Which of the following compounds is an organic compound? iagram 2 Which of the following compounds could be used as substance X? alsium carbonate, ao 3 arbonic acid, H 2 O 3 arbon dioxide, O 2 Glucose, 6 H 12 O 6 Ethene, 2 H 4 Sodium chloride solution, Nal hloromethane, H 3 l Ethyl ethanoate, H 3 OO 2 H 5

3 110 SOLN ULNGKJI SPM iagram 4 shows the graph of volume of carbon dioxide gas against time when 5 g of marble chips is added to 50 cm 3 of 0.2 mol dm -3 hydrochloric acid. Volume of O 2 gas / cm iagram 6 shows the set up of apparatus to determine the empirical formula for metal oxide. iagram 6 iagram 4 t what time the rate of reaction the highest? t 1 t 2 t 3 t 4 Which of the following metals is most suitable to be used in the diagram 6? Lead opper Silver Magnesium 18. iagram below shows the formula of a nitrate salt 11. Which statement is correct about noble gases? Exist as diatomic molecules o not form chemical bonds Form ions with different valencies ombine with transition metals to form coloured compounds 12. Which of the following substances has electrostatic forces between its particles? Naphthalene Hydrogen chloride arbon dioxide Magnesium oxide 13. cid rain causes the land to become acidic. Farmers neutralize the acidity in the soil by adding lime zinc nitre sulphur ammonium sulphate 14. tom of element X has a proton number of 13. Where is X located in the Periodic Table of Elements? Group Period Which of the following substances is made up of atoms? rgon hlorine Nitrogen mmonia 16. iagram 5 shows two examples of medicine Y Penicillin Streptomycin iagram 5 What is type of medicine Y Hormon nalgesic ntibiotic Psychotherapeutic medicine XNO 3 Which of the following are the possible ions of X? I Silver ion III arbonate ion II Hydroxide ion IV mmonium ion I and III only II and III only I and IV only II and IV only 19. aking powder contains sodium hydrogen carbonate. It reacts with acidic substances to release hydrogen carbon dioxide nitrogen nitrogen dioxide 20. study of three metals M, N and O is carried out. It is found that metal M has the highest tendency to lose electron while metal O has the least tendency. It can be summarised as below: Which of the following statements are true of the metals M, N and O? I M displaces N from aqueous N nitrate II M will corrode if placed in contact with O in aqueous M nitrate III N is the positive terminal in a chemical cell using both N and O as electrodes IV The voltage for chemical cell using M and O is bigger than chemical cell using N and O. I, II and III only I, III and IV only I, II and IV only II, III and IV only 21. Which of the following solutions have the same number of hydrogen ions, H +, as in 50 cm 3 of 0.1 mol dm -3 sulphuric acid, H 2 SO 4? I 100 cm 3 of 0.1 mol dm -3 hydrochloric acid, Hl II 50 cm 3 of 0.2 mol dm -3 nitric acid, HNO 3 III 100 cm 3 of 0.1 mol dm -3 ethanoic acid, H 3 OOH IV 50 cm 3 of 0.1 mol dm -3 phosphoric acid, H 3 PO 4 I and II only I and III only III and IV only I, II and III only

4 SOLN ULNGKJI SPM iagram 7 shows molecular structure of a polymer. 26. iagram 9 represents the structural formula of a carbon compound. iagram 7 What is the name of the monomer of the polymer in the diagram? Ethene Propene utene hloroethene iagram 9 Which of the following alcohol reacts with propanoic acid to produce the above compound? 23. Table 1 shows the relative atomic mass of helium, carbon, sulphur and copper Table 1 Which of the following statements is true? [ vogadro constant = 6.0 x mol -1 ] Mass of one copper atom is 64 g Mass of 1 mol of helium is 8 g 32 g of sulphur contains 6.02 x sulphur atom Mass of one sulphur atom is 32 times bigger than one carbon atom 24. Iron(III) ions can be reduced to iron(ii) ions by substance X. Which of the following is substance X? Zinc hlorine water cidified potassium manganate(vii) solution cidified potassium dichromate(vi) solution 25. iagram 8 shows the apparatus set-up used to study the rate of reaction of calcium carbonate and hydrochloric acid. iagram 8 The rate of the above reaction can be increased by 27. What is the oxidation number of nitrogen in NO 2? student discovered that a green apple that was cut into smaller pieces turned brown after 15 minutes. Which of the following substances should be added to prevent the browning of apple. scorbic acid Sugar lcohol Lechitin 29. The following statement is about X 3+ ion. Which of the following proton numbers and nucleon numbers shows for atom X? X 3+ ion has 14 neutrons and 10 electrons. Proton number Nucleon number grinding the marble chips lowering the temperature of hydrochloric acid using a larger flask adding water to hydrochloric acid

5 112 SOLN ULNGKJI SPM iagram 10 shows the electron arrangement of a compound formed between element T and element Q. 34. Which of the following statements explains why ceramic is suitable to make an engine block? eramic is chemically inert eramic is an electric conductor eramic can withstand high temperature eramic has a low specific heat capacity iagram 10 What group in the Periodic Table of Elements is element Q located? 35. Table 2 shows the proton number of elements S, T, U and V Which of the following pairs of substances is most suitable to prepare copper(ii) sulphate salt? opper with dilute sulphuric acid opper(ii) chloride with dilute sulphuric acid opper(ii) carbonate with dilute sulphuric acid opper(ii) nitrate solution with sodium sulphate solution 32 iagram 11 shows the set-up of apparatus of an electrolysis process. iagram 11 Which of the following electrolytes produce oxygen gas at electrode X? I 1.0 mol dm -3 hydrochloric acid II 1.0 mol dm -3 sulphuric acid III 1.0 mol dm -3 potassium nitrate solution IV 1.0 mol dm -3 potassium bromide I and II only III and IV only II and III only II, III and IV only 33. The following equation represents the reaction between sodium hydroxide solution and dilute sulphuric acid. H 2 SO 4 + 2NaOH Na 2 SO 4 + 2H 2 O What is the volume of 0.5 mol dm -3 sulphuric acid needed to neutralise 50 cm 3 of 0.5 mol dm -3 sodium hydroxide? Table 2 What is the arrangement of elements S, T, U and V in ascending order of atomic size? S, T, U, V S, V, T, U V, U, T, S U, T, S, V H 8 is the molecular formula for isomers X and Y. Which of the following statements is true of isomers X and Y? X and Y have similar molecular structure X and Y have similar chemical properties X and Y have different relative molecular mass X and Y have similar physical properties 37. iagram 12 shows curve X obtained when 8 g of granulated zinc (in excess) is reacted with 50 cm 3 of 1 mol dm -3 sulphuric acid. iagram 12 Which of the following reactions produces curve Y? 8 g zinc powder + 50 cm 3 of 2 mol dm -3 sulphuric acid 8 g zinc powder + 50 cm 3 of 1 mol dm -3 of sulphuric acid 8 g granulated zinc cm 3 of 1 mol dm -3 of sulphuric acid 8 g granulated zinc + 50 cm 3 of 2 mol dm -3 of sulphuric acid 12.5 cm cm cm cm 3

SOLN ULNGKJI SPM 2012 113 38. The following statements are about atom G and J.

6 SOLN ULNGKJI SPM The following statements are about atom G and J. Electron arrangement of atom G is 1 Proton number of atom J is 6 What is the formula of the compound formed between G and J? 43. iagram 15 shows curve W obtained from the decomposition of 20 cm 3 of 0.40 mol dm -3 hydrogen peroxide solution, H 2 O 2, using 0.2 g of manganese (IV) oxide as catalyst at a temperature of JG J 4 G JG 2 JG affeine is found in coffee bean. Its molecular formular is 4 H 5 N 2 O. If one coffee bean contains 0.02 mol of caffeine, determine the mass of the compound in ten coffee beans [Relative tomic Mass ;, 12 ; H, 1 ; N, 14 ; O, 16] 0.97 g 9.70 g 1.9 g 19.4 g iagram 15 Which of the following experiments will produce curve X? g of potassium hydroxide is dissolved in distilled water to form 250 cm 3 of solution. What is the molarity of the potassium hydroxide solution? [Relative tomic Mass: H,1 ; O,16 ; K, 39] 0.03 mol dm mol dm mol dm mol dm Table 4 shows the proton number of element X and Y. Table 4 Which of the following is true for compound formed between X and Y? onding type Electrical conductivity Ionic in aqueous and molten state ovalent in aqueous and molten state ovalent in aqueous state only Ionic in molten state only 42. Table 5 shows the results of an experiment for three chemical cells P, Q and R. 44. Table 6 shows the melting and boiling points of substances P, Q, R and S. Table 6 Which of the following substances has the highest kinetic energy at room temperature? P R Q S 45. The following equation shows the complete combustion of propene gas. 3 H 6 (g) + 9/2 O 2 (g) 3O 2 (g) + 3H 2 O(g) Which of the following statements are true when 1 mol of propene gas is burnt completely? [Relative atomic Mass : 3 H 8, 44 ; O 2, 32 ; O 2, 44 ; H 2 O, 18, Molar volume of gas 22.4 dm 3 mol 1 at S.T.P.] Table 5 Which of the following arrangements of metals X, Y and Z is in descending order of electropositivity in the electrochemical series? I II III IV omplete combustion of 0.1 mol of propene produces 5.4 g of water omplete combustion of 1 mol of propene gas produces 2 mol of water omplete combustion of 4.2 g of propene requires 14.4g of oxygen. omplete combustion of 0.1 mol of propene produces 6.72 dm 3 carbon dioxide gas at s.t.p. Z, X, Y X, Y, Z Z, Y, X X, Z, Y I and II only II and IV only I and IV only I, III and IV

7 114 SOLN ULNGKJI SPM mmonium sulphate, (NH 4 ) 2 SO 4 is an example of a fertilizer. alculate the percentage of nitrogen in 1 mole of ammonium sulphate. [Relative tomic Mass: N, 14 ; H,1 ; S,32 ; O,16] % % % % 47. iagram 16 shows an apparatus set up to investigate a redoxreaction by tranferring electrons at a distance. 48. Metal M forms a chloride compound with the formula Ml 3. Given the formula of chromate (IV) ions is ro 4 2-, then the formula of M chromate is MrO 4 M(rO 4 ) 3 M 2 ro 4 M 2 (ro 4 ) 3 49 iagram 17 shows the process to produce compound J. iagram 17 Which of the following structural formulas is of compound J? iagram 16 In this reaction, electron flow from electrodee P to electrode Q. Which of the following are the correct solution for P and Q? Solution X Solution Y romine water Iron(II) sulphate romine water cidified potassium dichromate(vi) solution Potassium iodide solution solution Potassium iodide solution Potassium iodide solution cidified potassium dichromate(vi) solution O H 3 O H 2 H 3 O H 3 O H 2 H 2 H 3 O H 3 H 2 O H 2 H 3 O H 3 H 2 O H 2 H 2 H The empirical formula of a hydrocarbon is H 2. Its relative molecular mass is 56. What is the molecular formula of the hydrocarbon? [Relative atomic mass: H, 1;, 12 ]. 3 H 8. 4 H 8. 4 H H 10

8 SOLN ULNGKJI SPM hemistry Paper 2 [4541/2] SETION nswer ll Questions 1. iagram below shows an industrial preparation of compound Y from the product of ontact process and Haber process. ontact process Sulphuric acid ompound Y Haber process ompound X (a) State the name of compound X. (b) Write the formula of compound Y. (c) (d) (e) Sulphur dioxide, SO 2 is one of the product of the ontact process that can cause acid rain. State one effect of acid rain to the environmental. Urea, (NH 4 ) 2 O and compound Y are two type of fertilizers. (i) alculate the percentage of nitrogen by mass in both fertilizers. [Relative tomic Mass ; H, 1 ;, 12 ; N, 14 ; O, 16 ; S, 32] (ii) Which fertilizers is a better for the growth of plants? Explain why. Sulphuric acid is one of the raw materials to produce synthetic polymers. However synthetic polymers are difficult to dispose. (i) Why we cannot burn the synthetic polymer? (ii) State one way to overcome the problem in (e)(i).

116 SOLN ULNGKJI SPM 2012 2. iagram below shows the graph of temperature against time when solid of P is heated. Temperature/ o F 259 E 63 Time/s (a) What is meaning of melting point?

9 116 SOLN ULNGKJI SPM iagram below shows the graph of temperature against time when solid of P is heated. Temperature/ o F 259 E 63 Time/s (a) What is meaning of melting point? [ 1 mark ] (b) State the melting point and boiling point of substance P. (c) Melting point oiling point : : Explain why temperature unchanged at? [ 1 mark ] (d) omplete the table below by stating the physical state of substance P. (e) Table below shows the melting point and boiling point of four substances. (i) What is the physical state of R and S at room temperature? (ii) R : S : raw the arrangement of particles of T at room temperature. [ 1 mark ]

10 SOLN ULNGKJI SPM iagram below shows the chemical change occurred in copper compound. II opper(ii) carbonate I opper(ii) sulphate solution opper(ii) oxide III opper metal IV (a) opper(ii) carbonate is converted to copper(ii) oxide in reaction I. (i) State the colour of copper(ii) oxide. (ii) Write the chemical equation for the reaction I. (b) (c) (iii) 4.0g copper(ii) oxide is produced from the reaction I. alculate mass of copper(ii) carbonate used? [Relative tomic Mass : u, 64 ; O, 16 ;, 12] opper metal can be changed to copper(ii) sulphate solution in process III and then to copper(ii) carbonate in process II. (i) Name the process II. (ii) Suggest the substances that used in process II and process III. Process II : Process III : opper(ii) oxide can be reduced to copper metal by passing the dry hydrogen gas. raw a labeled diagram how to produce copper metal from the copper(ii) oxide in the lab. 4. Equation below shows the energy release from the reaction of iron and copper(ii) sulphate solution. (Relative tomic Mass : u, 64 ; Water heat specific capacity, 4.2 Jg 1 O 1 ) Fe + uso 4 u + FeSO 4 ΔH = 200kJmol 1 (a) Name the reaction represented by the equation above?

11 118 SOLN ULNGKJI SPM 2012 (b) (c) What meant ΔH = 200kJmol 1 from the equation above? raw the energy level diagram for this reaction. (d) If excess iron powder is added to the 100 cm 3 copper(ii) sulphate solution 0.25 moldm 3, calculate: (i) Temperature rise from this equation. (ii) Mass of copper formed. (e) If iron powder is displaced by magnesium powder, predict the value of ΔH whether higher or lower than 200 kjmol 1. Explain why? (f ) Name one another metal that cannot displace copper from copper(ii) sulphate solution. H H H H H = H H H ompound P 5. iagram above the structural formula of organic compound, P. (a) Name the compound P. (b) When compound P is burnt completely in excess oxygen, 5.4g of water produce. (i) Write the equation for the combustion of compound P in excess oxygen. (ii) alculate the mass of compound P used? [Relative tomic mass:, 12 ; H, 1]

12 SOLN ULNGKJI SPM Substance X + glycerol fats + substance Y (c) Equation above shows the reaction involve in manufacture of fats. State substance X and substance Y. (d) (e) Substance X : Substance Y : State the homologous series of fats. Fats can be divided into saturated fats and unsaturated fats. (i) Name the process to convert unsaturated fats to the saturated fats. (ii) State the catalyst used in this process. 6. student carried out two experiments to investigate the factor that affects the rate of reaction. (a) (i) Write the chemical equation for this reaction. (ii) alculate the maximum volume of hydrogen gas released at room condition in these experiments. [Molar volume of gas at room condition, 24 dm 3 mol -1 ] (b) alculate the average rate of reaction for experiment 1 and experiment 2. (c) The volume of gas released in experiment 1 is sketched in the diagram below. Volume of gas/ cm 3 Sketch the curve for experiment 2 in diagram above. Time / s (d) Explain why the rate of reaction experiment 2 is higher than experiment 1 according the collision theory.

13 120 SOLN ULNGKJI SPM 2012 SETION [20 marks] nswer any one question from this section 7. iagram below shows the apparatus set up for the electrolysis of copper(ii) sulphate solution using carbon and copper electrodes. fter 30 minutes the changes was observed. opper (II) (a) ased on the diagram above, state the factor that determines the product formed at electrode X and Y. (b) (c) (d) Explain the reaction at electrode X and Y. Include the following in your explanation. List all the ions present in the electrolyte List of ions attracted to each electrode Name of the ion selectively discharge and ion formed at electrode. The reason why the ions selective discharge at cathode Half equation for the reaction at the each electrode. opper electrode X is replaced by carbon electrode. (i) State the type the reaction at this electrode. Give a reason. (ii) Write the half equation for the reaction at this electrode. iagram below shows the simple voltaic cell. [10 marks] [4 marks] Electron flows from metal Q to metal P. Identify the negative terminal and positive terminal in this simple voltaic. State the observation in each terminal. [4 marks] 8. (a) (i) y state an example of reaction between acid and metal, explain the redox reaction in terms of change in oxidation number. (ii) y state an example, explain why double decomposition reaction not a redox reaction? [4 marks] (b) Reaction between copper(ii) sulphate solution and zinc metal also is an example of redox reaction. (i) Name and write the half equation of this reaction to show oxidation and reduction process. [5 marks] (ii) State two observations that you can observe. Explain why. [4 marks] (iii) opper(ii) sulphate solution is replaced by the iron(iii) chloride solution. State two observations and determine the oxidizing and reducing agent. [4 marks]

14 SOLN ULNGKJI SPM SETION [20 marks] nswer any one question from this section 9. (a) Salt is very important in our daily life. (i) State what is salt? (ii) Zinc nitrate is an example of soluble salt. State four reactions how to prepare zinc nitrate and write chemical equation for the each reaction. (b) student wants to prepare 100 cm 3 solution of sodium hydroxide 0.2 mol dm -3. [Relative tomic Mass: Na, 23 ; O, 16 ; H, 1] (i) alculate the mass of sodium hydroxide necessary to prepare this solution. [8 marks] (ii) Explain how we want to prepare 100 cm 3 sodium hydroxide solution 0.1 mol dm 3 from the solution in (b)(i) through dilution process. 10. (a) Ethene is an example hydrocarbon compound. (i) What is meant by hydrocarbon and state the hologous series of ethene. (b) (c) (ii) Ethene is bubble through bromine water. What is observation and state the type of reaction that occurred. Give the name and draw the structure formula of the product. hydrocarbon Z contains 82.75% of carbon by mass. [Relative Molecular Mass :, 12 ; H,1] (i) alculate the empirical formula of Z. (ii) etermine the molecular formula of Z if its Relative Molecular Mass is 58. (iii) raw and name the all of isomers of compound Z. Explain why vulcanised rubber more elastic than natural rubber. [7 marks] [4 marks] [4 marks] [4 marks]

15 122 SOLN ULNGKJI SPM 2012 hemistry Paper 3 [4541/3] nswer all questions 1 iagram 1.1 shows the set-up of apparatus used in an experiment to determine the position of different metals in the electrochemical series by measuring the voltage of different pairs of metals. The experiment is repeated by replacing metal M with metals N, P and Q and salt solution of M with the respective salt solutions of N, P and Q. The copper electrode is the positive terminal in all the experiments. iagram 1.1

16 SOLN ULNGKJI SPM iagram 1.2 shows the voltmeter readings of all the experiments. (a) Record the voltmeter readings in the spaces provided in iagram 1.2. (b) (c) iagram 1.2 onstruct a table to record the voltmeter reading for the different pairs of metals. State one hypothesis based on this experiment. _ (d) State the observations that can be made for this experiment after 20 minutes at: (i) The negative terminal (ii) The positive terminal (iii) The copper(ii) sulphate solution

17 124 SOLN ULNGKJI SPM 2012 (e) Explain your answer for (d) (iii). (f ) State the operational definition for the position of metals in the electrochemical series. (g) (h) (j) For this experiment, state: (i) The manipulated variable _ (ii) The responding variable _ (iii) The constant variable _ ased on the voltmeter readings, arrange all the metals in ascending order of their electropositivity. _ (i) The experiment is repeated by using different pairs of metals as shown in Table 1. Predict the positive terminal and the voltage for each pair of metals by completing the table. The following is a list of chemical substances: Sodium chloride Silver chloride Zinc sulphate Lead(II) sulphate Table 1 lassify these substances into substances that can be made as an electrolyte and substances that cannot be made as an electrolyte. [6 marks]

18 SOLN ULNGKJI SPM iagram 2.1 shows two methods of dissolving sugar cubes to make sugar solution. iagram 2.1 group of students discovered that it is faster to dissolve the sugar cubes to make sugar solution by using hot water rather than cold water. This is due to the difference in the temperature of the water. Referring to the situation above, plan a laboratory experiment to investigate the effect of temperature on the rate of reaction between sulphuric acid and sodium thiosulphate solution. Your planning should include the following aspects. a) Statement of the problem b) ll the variables c) Statement of the hypothesis d) Lists of substances and apparatus e) Procedure f ) Tabulation of data [17 marks] EN OF QUESTION PPER

Chemistry. Analysis 108 SOALAN ULANGKAJI SPM [4541/1] [4541/2] [4541/3]

Chemistry. Analysis 108 SOALAN ULANGKAJI SPM [4541/1] [4541/2] [4541/3] 108 SOLN ULNGKJI SPM 2012 nalysis hemistry [4541/1] [4541/2] [4541/3] http://cikguadura.wordpress.com/ 109 hemistry Paper 1 http://cikguadura.wordpress.com/ 1. iagram 1 shows the electron arrangement of