MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

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1 CHE Spring Chapter 4 Homework 4 (Chapter 4: Aqueous reactions and solution stoichiometry) MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1)Based on the activity series, which one of the reactions below will occur? A) SnCl 2 (aq) + Cu (s) Sn (s) + CuCl 2 (aq) B)Zn (s) + MnI 2 (aq) ZnI 2 (aq) + Mn (s) C) 3Hg (l) + 2Cr(NO 3 ) 3 (aq) 3Hg(NO 3 ) 2 + 2Cr (s) D) 3FeBr2 (aq) + 2Au (s) 3Fe (s) + 2AuBr3 (aq) E)2AgNO3 (aq) + Pb (s) 2Ag (s) + Pb(NO3)2 (aq) 2)Which of the following would require the largest volume of M sodium hydroxide solution for neutralization? A) 5.0 ml of M sulfuric acid B)10.0 ml of M phosphoric acid C) 10.0 ml of M perchloric acid D) 15.0 ml of M hydrobromic acid E)20.0 ml of M nitric acid 3) What volume (ml) of a concentrated solution of sodium hydroxide (6.00 M) must be diluted to ml to make a M solution of sodium hydroxide? A) 50.0 B) 26.4 C) 29.3 D) 176 E) )Oxidation is the and reduction is the. A) gain of oxygen, loss of electrons B)loss of oxygen, gain of electrons C) loss of electrons, gain of electrons D) gain of oxygen, loss of mass E) gain of electrons, loss of electrons 5)What is the molarity of a NaOH solution if 28.2 ml of a M H2SO4 solution is required to neutralize a 25.0-mL sample of the NaOH solution? A) B) 125 C) D) E) ) 2) 3) 4) 5) 1

2 6)The balanced molecular equation for complete neutralization of H 2 SO 4 by KOH in aqueous solution is. A) 2H + (aq) + 2OH - (aq) 2H 2 O (l) B) H2SO4 (aq) + 2KOH (aq) 2H2O (l) + K2SO4 (aq) C) H 2 SO 4 (aq) + 2OH - (aq) 2H 2 O (l) + SO 2-4 (aq) D) 2H + (aq) + 2KOH (aq) 2H 2 O (l) + 2K + (aq) E)H 2 SO 4 (aq) + 2KOH (aq) 2H 2 O (l) + K 2 SO 4 (s) 6) 7)What volume (ml) of M phosphoric acid can be neutralized with 115 ml of M sodium hydroxide? A) 75.0 B) 375 C) 125 D) 188 E) 750 8)Oxidation cannot occur without. A) air B) reduction C) acid D) water E) oxygen 9) is an oxidation reaction. A) Table salt dissolving in water for cooking vegetables B)Rusting of iron C) The reaction of sodium chloride with lead nitrate to form lead chloride and sodium nitrate D) Ice melting in a soft drink E) Neutralization of HCl by NaOH 10)One method for removal of metal ions from a solution is to convert the metal to its elemental form so it can be filtered out as a solid. Which metal can be used to remove aluminum ions from solution? A) copper B) zinc C) lead D) cobalt E)none of these 7) 8) 9) 10) 2

3 11)Which one of the following is a triprotic acid? A) nitric acid B) phosphoric acid C) hydrofluoric acid D) chloric acid E) sulfuric acid 11) 12)What volume (ml) of M perchloric acid can be neutralized with 115 ml of M sodium hydroxide? A) 750 B) 188 C) 8.60 D) 375 E) ) What volume (ml) of a concentrated solution of sodium hydroxide (6.00 M) must be diluted to 200. ml to make a 1.50 M solution of sodium hydroxide? A) B) 800. C) 50.0 D) E) )With which of the following will the potassium ion form an insoluble salt? A) chloride B) sulfate and carbonate C) sulfate D) carbonate E)none of the above 15) The point in a titration at which the indicator changes is called the. A) standard point B) volumetric point C) endpoint D) setpoint E) indicator point 16) The balanced reaction between aqueous nitric acid and aqueous strontium hydroxide is. A) 2HNO3 (aq) + Sr(OH)2 (aq) Sr(NO3)2 (aq) + 2H2 (g) B)2HNO3 (aq) + Sr(OH)2 (aq) 2H2O (l) + Sr(NO3)2 (aq) C) HNO3 (aq) + Sr(OH)2 (aq) Sr(NO3)2 (aq) + H2 (g) D) HNO3 (aq) + SrOH (aq) H2O (l) + SrNO3 (aq) E)HNO3 (aq) + Sr(OH)2 (aq) H2O (l) + Sr(NO3)2 (aq) 12) 13) 14) 15) 16) 3

4 17) Which one of the following is a correct expression for molarity? A) mmol solute/ml solution B) mol solute/kg solvent C) mol solute/ml solvent D) mol solute/l solvent E) μmol solute/l solution 18)What mass (g) of potassium chloride is contained in ml of a potassium chloride solution that has a chloride ion concentration of M? A) 6.19 B) C) D) E) )Based on the activity series, which one of the reactions below will occur? A) Pb (s) + NiI2 (aq) PbI2 (aq) + Ni (s) B)Fe (s) + ZnCl2 (aq) FeCl2 (aq) + Zn (s) C) SnBr2 (aq) + Cu (s) CuBr2 (aq) + Sn (s) D) Mn (s) + NiCl2 (aq) MnCl2 (aq) + Ni (s) E)None of the reactions will occur. 20) Oxidation and mean essentially the same thing. A) reduction B) corrosion C) metathesis D) activity E) decomposition 21)Zinc is more active than cobalt and iron but less active than aluminum. Cobalt is more active than nickel but less active than iron. Which of the following correctly lists the elements in order of increasing activity? A) Ni < Fe < Co < Zn < Al B)Fe < Ni < Co < Al < Zn C) Ni < Co < Fe < Zn < Al D) Zn < Al < Co < Ni < Fe E)Co < Ni < Fe < Zn < Al 22) Which solution contains the largest number of moles of chloride ions? A) 10.0 ml of 0.500M BaCl2 17) 18) 19) 20) 21) 22) B)30.00 ml of 0.100M CaCl2 C) 7.50 ml of 0.500M FeCl3 D) ml of 0.400M KCl E)4.00 ml of 1.000M NaCl 4

5 23) In which reaction does the oxidation number of hydrogen change? A) CaO (s) + H2O (l) Ca(OH)2 (s) B)2 Na (s) + 2 H2O (l) 2 NaOH (aq) + H2 (g) C) 2 HClO 4 (aq) + CaCO 3 (s) Ca(ClO 4 ) 2 (aq) + H 2 O (l) + CO 2 (g) D) SO2(g) + H2O (l) H2SO3 (aq) E)HCl (aq) + NaOH (aq) NaCl (aq) + H2O (l) 24)Which of the following is insoluble in water at 25 C? A) (NH4)2CO3 B) Ca(OH)2 C) Ba(C2H3O2)2 D) Mg3(PO4)2 E) Na2S 25) Of the species below, only is not an electrolyte. A) NaCl B)HCl C) Ar D) Rb2SO4 E)KOH 26)A stock solution of HNO 3 is prepared and found to contain 13.5 M of HNO 3. If 25.0 ml of the stock solution is diluted to a final volume of L, the concentration of the diluted solution is M. A) B) 675 C) D) 270 E) ) Which of the following reactions will not occur as written? A) Zn (s) + Pb(NO 3 ) 2 (aq) Pb (s) + Zn(NO 3 ) 2 (aq) B)Mg (s) + Ca(OH) 2 (aq) Ca (s) + Mg(OH) 2 (aq) C) Co (s) + 2HI (aq) H2 (g) + CoI2 (aq) D) Co (s) + 2AgCl (aq) 2Ag (s) + CoCl2 (aq) E) Sn (s) + 2AgNO3 (aq) 2Ag (s) + Sn(NO3)2 (aq) 23) 24) 25) 26) 27) 5

6 28) The net ionic equation for the reaction between aqueous nitric acid and aqueous sodium hydroxide is. A) HNO3 (aq) + NaOH (aq) NaNO3 (aq) + H2O (l) B)H + (aq) + Na+ (aq) +OH- (aq) H2O (l) + Na+ (aq) C) H + (aq) + OH- (aq) H 2 O (l) D) H + (aq) + HNO3 (aq) + 2OH - (aq) 2H 2 O (l) + NO 3 - (aq) E)HNO3 (aq) + OH- (aq) NO3 - (aq) + H2O (l) 29)You are given two clear solutions of the same unknown monoprotic acid, but with different concentrations. Which statement is true? A) If the same volume of each sample was taken, then more base solution would be required to neutralize the one with lower concentration. B) It would take more base solution (per milliliter of the unknown solution) to neutralize the more concentrated solution. C) The product of concentration and volume of the less concentrated solution equals the product of concentration and volume of the more concentrated solution. D) There is no chemical method designed to tell the two solutions apart. E) A smaller volume of the less concentrated solution contains the same number of moles of the acid compared to the more concentrated solution. 30) When aqueous solutions of are mixed, a precipitate forms. A) Li2CO3 and CsI B) KOH and Ba(NO3)2 C) NiBr2 and AgNO3 D) K 2 SO 4 and CrCl 3 E)NaI and KBr 31)A solution is prepared by adding 1.60 g of solid NaCl to 50.0 ml of M CaCl2. What is the molarity of chloride ion in the final solution? Assume that the volume of the final solution is 50.0 ml. A) B) C) D) E) )What mass (g) of CaF2 is formed when 47.8 ml of M NaF is treated with an excess of aqueous calcium nitrate? A) 2.49 B) C) D) E) ) 29) 30) 31) 32) 6

7 33) Which hydroxides are weak bases? A) KOH, Ba(OH)2 B)KOH, NaOH C) KOH, NaOH, Ba(OH)2 D) Sr(OH)2, KOH, NaOH, Ba(OH)2 E)None of these is a weak base. 34)Which of these metals will be oxidized by the ions of cobalt? A) copper B) tin C) iron D) silver E) nickel 35)What volume (ml) of M NaOH is required to neutralize 13.7 ml of M HCl? A) B) 13.1 C) 6.55 D) 14.3 E) ) Which combination will produce a precipitate? A) AgNO3 (aq) and Ca(C2H3O2)2 (aq) B)NaOH (aq) and HCl (aq) C) KOH (aq) and Mg(NO3)2 (aq) D) NaOH (aq) and HCl (aq) E)NaC 2 H 3 O 2 (aq) and HCl (aq) 37)Which one of the following is a weak acid? A) HClO4 B) HF C) HNO3 D) HI E) HCl 33) 34) 35) 36) 37) 38)Aqueous solutions of a compound did not form precipitates with Cl -, Br -, I -, S O 4 2-, CO3 2-, PO4 3-, OH -, or S 2-. This highly water-soluble compound produced the foul-smelling gas H2S when the solution was acidified. This compound is. A) AgNO3 B)Pb(NO 3 ) 2 C) KBr D) Li2CO3 E)(NH4)2S 39)A 36.3 ml aliquot of M H2SO4 (aq) is to be titrated with M NaOH (aq). What volume (ml) of base will it take to reach the equivalence point? A) 187 B) 46.7 C) 1.92 D) 93.4 E) ) 39) 7

8 40)An aliquot (28.7 ml) of a KOH solution required 31.3 ml of M HCl for neutralization. What mass (g) of KOH was in the original sample? A) 1.64 B) C) D) E) ) 8

AP Chapter 4 Study Questions

Class: Date: AP Chapter 4 Study Questions True/False Indicate whether the statement is true or false. 1. Ca(OH) 2 is a strong base. 2. The compound HClO 4 is a weak acid. 4. The compound NH 4 Cl is a weak