Chemistry, 11e (Brown/LeMay/Brusten/Murphy)
Chapter 4: Aqueous Reactions and Solution Stoichiometry
52) A 17.5 mL sample of an acetic acid (CH3CO2H) solution required 29.6 mL of 0.250 M NaOH for neutralization. The concentration of acetic acid was __________ M.
A) 0.158 B) 0.423 C) 134 D) 6.88 E) 0.214
Answer: B Diff: 3
Page Ref: Sec. 4.6
53) A 25.5 mL aliquot of HCl (aq) of unknown concentration was titrated with 0.113 M NaOH (aq). It took 51.2 mL of the base to reach the endpoint of the titration. The concentration (M) of the acid was __________.
A) 1.02 B) 0.114 C) 0.454 D) 0.113 E) 0.227
Answer: E Diff: 4
Page Ref: Sec. 4.6
Chemistry, 11e (Brown/LeMay/Brusten/Murphy)
Chapter 4: Aqueous Reactions and Solution Stoichiometry
54) A 31.5 mL aliquot of HNO3(aq) of unknown concentration was titrated with 0.0134 M NaOH (aq). It took 23.9 mL of the base to reach the endpoint of the titration. The concentration (M) of the acid was __________.
A) 0.0102 B) 0.0051 C) 0.0204 D) 0.227 E) 1.02
Answer: A Diff: 4
Page Ref: Sec. 4.6
55) A 31.5 mL aliquot of H2SO4(aq) of unknown concentration was titrated with 0.0134 M NaOH (aq). It took 23.9 mL of the base to reach the endpoint of the titration. The concentration (M) of the acid was __________.
A) 0.0102 B) 0.00508 C) 0.0204 D) 0.102 E) 0.227
Answer: B Diff: 4
Page Ref: Sec. 4.6
4.2 Multiple Choice Questions
1) Of the species below, only __________ is not an electrolyte.
A) HCl B) Rb2SO4 C) Ar D) KOH E) NaCl
Answer: C Diff: 1
Page Ref: Sec. 4.1
Chemistry, 11e (Brown/LeMay/Brusten/Murphy)
Chapter 4: Aqueous Reactions and Solution Stoichiometry
2) The balanced molecular equation for complete neutralization of H2SO4 by KOH in aqueous solution is __________.
A)2H?(aq)?2OH?(aq)?2H2O(l)
B)2H?(aq)?2KOH(aq)?2H2O(l)?2K?(aq) C)H2SO4(aq)?2OH?(aq)?2H2O(l)?SO42?(aq)
D)H2SO4(aq)?2KOH(aq)?2H2O(l)?K2SO4(s) E)H2SO4(aq)?2KOH(aq)?2H2O(l)?K2SO4(aq)
Answer: E Diff: 1
Page Ref: Sec. 4.2
3) Aqueous potassium chloride will react with which one of the following in an exchange (metathesis) reaction?
A) calcium nitrate B) sodium bromide
C) lead nitrate （SbNo3） D) barium nitrate E) sodium chloride
Answer: C Diff: 2
Page Ref: Sec. 4.2
Chemistry, 11e (Brown/LeMay/Brusten/Murphy)
Chapter 4: Aqueous Reactions and Solution Stoichiometry
4) Aqueous solutions of a compound did not form precipitates with Cl?, Br?, I?, SO42?, CO32?, PO43?, OH?, or S2?. This highly water-soluble compound produced the
foul-smelling gas H2S when the solution was acidified. This compound is __________.
A) Pb(NO3)2 B) (NH4)2S C) KBr D) Li2CO3 E) AgNO3
Answer: B Diff: 3
Page Ref: Sec. 4.2
5) The net ionic equation for formation of an aqueous solution of NiI2 accompanied by evolution of CO2 gas via mixing solid NiCO3 and aqueous hydriodic acid is __________.
A)2NiCO3(s)?HI(aq)?2H2O(l)?CO2(g)?2Ni2?(aq) B)NiCO3(s)?I?(aq)?2H2O(l)?CO2(g)?Ni2?(aq)?HI(aq) C)NiCO3(s)?2H?(aq)?H2O(l)?CO2(g)?Ni2?(aq) D)NiCO3(s)?2HI(aq)?2H2O(l)?CO2(g)?NiI2(aq) E)NiCO3(s)?2HI(aq)?H2O(l)?CO2(g)?Ni2?(aq)?2I?(aq)
Answer: C Diff: 4
Page Ref: Sec. 4.2
Chemistry, 11e (Brown/LeMay/Brusten/Murphy)
Chapter 4: Aqueous Reactions and Solution Stoichiometry
6) The net ionic equation for formation of an aqueous solution of Al(NO3)3 via mixing solid Al(OH)3and aqueous nitric acid is __________.
A)Al(OH)3(s) ?3HNO3(aq)?3H2O(l)?Al(NO3)3(aq) B)Al(OH)3(s) ?3NO3?(aq)?3OH?(aq) ?Al(NO3)3(aq) C)Al(OH)3(s) ?3NO3?(aq)?3OH?(aq)?Al(NO3)3(s) D)Al(OH)3(s) ?3H?(aq)?3H2O(l)?Al3?(aq)
E)Al(OH)3(s) ?3HNO3(aq)?3H2O(l)?Al3?(aq)?NO3?(aq)
Answer: D Diff: 4
Page Ref: Sec. 4.2
7) Which of the following is soluble in water at 25 °C?
A) Fe3 (PO4)2 B) Fe(OH)2 C) Fe(NO3)2 D) FeCO3 E) FeS
Answer: C Diff: 2
Page Ref: Sec. 4.2
8) Which of the following is insoluble in water at 25 °C?
A) Mg3(PO4)2 B) Na2S
C) (NH4)2CO3 D) Ca(OH)2
E) Ba(C2H3O2)2
Answer: A Diff: 4
Page Ref: Sec. 4.2