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Chemistry, 11e (Brown/LeMay/Brusten/Murphy)
Chapter 4: Aqueous Reactions and Solution Stoichiometry
4.1 Multiple-Choice and Bimodal Questions
1) The total concentration of ions in a 0.250 M solution of HCl is __________.
A) essentially zero.
B) 0.125 M
C) 0.250 M
D) 0.500 M
E) 0.750 M
Answer: D
Diff: 1
Page Ref: Sec. 4.1
2) A strong electrolyte is one that __________ completely in solution.
A) reacts
B) associates
C) disappears
D) ionizes
Answer: D
Diff: 2
Page Ref: Sec. 4.1
3) A weak electrolyte exists predominantly as __________ in solution.
A) atoms
B) ions
C) molecules
D) electrons
E) an isotope
Answer: C
Diff: 2
Page Ref: Sec. 4.1
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Chemistry, 11e (Brown/LeMay/Brusten/Murphy)
Chapter 4: Aqueous Reactions and Solution Stoichiometry
4) Which of the following are strong electrolytes?
HCl
HC2 H 3 O 2
NH 3
KCl
A) HCl, KCl
B) HCl, NH 3 , KCl
C) HCl, HC2 H 3 O 2 , NH 3 , KCl
D) HCl, HC2 H 3 O 2 , KCl
E) HC2 H 3 O 2 , KCl
Answer: A
Diff: 2
Page Ref: Sec. 4.1
5) Which of the following are weak electrolytes?
HCl
HC2 H 3 O 2
NH 3
KCl
A) HCl , KCl
B) HCl , HC2 H 3 O 2 , NH 3 , KCl
C) HC2 H 3 O 2 , KCl
D) HC2 H 3 O 2 , NH 3
E) HCl , HC2 H 3 O 2 , KCl
Answer: D
Diff: 2
Page Ref: Sec. 4.1
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Chemistry, 11e (Brown/LeMay/Brusten/Murphy)
Chapter 4: Aqueous Reactions and Solution Stoichiometry
6) What are the spectator ions in the reaction between KOH (aq) and HNO3 (aq)?
A) K + and H +
B) H + and OH −
C) K + and NO 3−
D) H + and NO 3−
E) OH − only
Answer: C
Diff: 2
Page Ref: Sec. 4.2
7) The net ionic equation for the reaction between aqueous solutions of HF and KOH is
__________.
A) HF + KOH → H 2 O + K + + F−
B) HF + OH − → H 2 O + F−
C) HF + K + + OH − → H 2 O + KF
D) H + + OH − → H 2 O
E) H + + F− + K + + OH − → H 2 O + K + + F−
Answer: B
Diff: 2
Page Ref: Sec. 4.2
8) Combining aqueous solutions of BaI 2 and Na 2 SO 4 affords a precipitate of BaSO 4 .
Which ion(s) is/are spectator ions in the reaction?
A) Ba 2+ only
B) Na + only
C) Ba 2+ and SO 4 2−
D) Na + and I−
E) SO 4 2− and I −
Answer: D
Diff: 2
Page Ref: Sec. 4.2
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Chemistry, 11e (Brown/LeMay/Brusten/Murphy)
Chapter 4: Aqueous Reactions and Solution Stoichiometry
9) Which ion(s) is/are spectator ions in the formation of a precipitate of AgCl via
combining aqueous solutions of CoCl 2 and AgNO 3 ?
A) Co 2+ and NO 3−
B) NO 3− and Cl −
C) Co2+and Ag +
D) Cl−
E) NO 3−
Answer: A
Diff: 2
Page Ref: Sec. 4.2
10) The balanced net ionic equation for precipitation of CaCO 3 when aqueous solutions
of Na 2 CO 3 and CaCl 2 are mixed is __________.
A) 2Na + (aq) + CO32− (aq) → Na 2 CO 3 (aq)
B) 2 Na + (aq) + 2Cl− (aq) → 2NaCl (aq)
C) Na + (aq) + Cl− (aq) → NaCl (aq)
D) Ca 2+ (aq) + CO 32− (aq) → CaCO 3 (s)
E) Na 2 CO 3 (aq) + CaCl 2 (aq) → 2NaCl (aq) + CaCO 3 (s)
Answer: D
Diff: 3
Page Ref: Sec. 4.2
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Chemistry, 11e (Brown/LeMay/Brusten/Murphy)
Chapter 4: Aqueous Reactions and Solution Stoichiometry
4.1 Multiple-Choice and Bimodal Questions
1) The total concentration of ions in a 0.250 M solution of HCl is __________.
A) essentially zero.
B) 0.125 M
C) 0.250 M
D) 0.500 M
E) 0.750 M
Answer: D
Diff: 1
Page Ref: Sec. 4.1
2) A strong electrolyte is one that __________ completely in solution.
A) reacts
B) associates
C) disappears
D) ionizes
Answer: D
Diff: 2
Page Ref: Sec. 4.1
3) A weak electrolyte exists predominantly as __________ in solution.
A) atoms
B) ions
C) molecules
D) electrons
E) an isotope
Answer: C
Diff: 2
Page Ref: Sec. 4.1
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Chemistry, 11e (Brown/LeMay/Brusten/Murphy)
Chapter 4: Aqueous Reactions and Solution Stoichiometry
4) Which of the following are strong electrolytes?
HCl
HC2 H 3 O 2
NH 3
KCl
A) HCl, KCl
B) HCl, NH 3 , KCl
C) HCl, HC2 H 3 O 2 , NH 3 , KCl
D) HCl, HC2 H 3 O 2 , KCl
E) HC2 H 3 O 2 , KCl
Answer: A
Diff: 2
Page Ref: Sec. 4.1
5) Which of the following are weak electrolytes?
HCl
HC2 H 3 O 2
NH 3
KCl
A) HCl , KCl
B) HCl , HC2 H 3 O 2 , NH 3 , KCl
C) HC2 H 3 O 2 , KCl
D) HC2 H 3 O 2 , NH 3
E) HCl , HC2 H 3 O 2 , KCl
Answer: D
Diff: 2
Page Ref: Sec. 4.1
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Chemistry, 11e (Brown/LeMay/Brusten/Murphy)
Chapter 4: Aqueous Reactions and Solution Stoichiometry
6) What are the spectator ions in the reaction between KOH (aq) and HNO3 (aq)?
A) K + and H +
B) H + and OH −
C) K + and NO 3−
D) H + and NO 3−
E) OH − only
Answer: C
Diff: 2
Page Ref: Sec. 4.2
7) The net ionic equation for the reaction between aqueous solutions of HF and KOH is
__________.
A) HF + KOH → H 2 O + K + + F−
B) HF + OH − → H 2 O + F−
C) HF + K + + OH − → H 2 O + KF
D) H + + OH − → H 2 O
E) H + + F− + K + + OH − → H 2 O + K + + F−
Answer: B
Diff: 2
Page Ref: Sec. 4.2
8) Combining aqueous solutions of BaI 2 and Na 2 SO 4 affords a precipitate of BaSO 4 .
Which ion(s) is/are spectator ions in the reaction?
A) Ba 2+ only
B) Na + only
C) Ba 2+ and SO 4 2−
D) Na + and I−
E) SO 4 2− and I −
Answer: D
Diff: 2
Page Ref: Sec. 4.2
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Chemistry, 11e (Brown/LeMay/Brusten/Murphy)
Chapter 4: Aqueous Reactions and Solution Stoichiometry
9) Which ion(s) is/are spectator ions in the formation of a precipitate of AgCl via
combining aqueous solutions of CoCl 2 and AgNO 3 ?
A) Co 2+ and NO 3−
B) NO 3− and Cl −
C) Co2+and Ag +
D) Cl−
E) NO 3−
Answer: A
Diff: 2
Page Ref: Sec. 4.2
10) The balanced net ionic equation for precipitation of CaCO 3 when aqueous solutions
of Na 2 CO 3 and CaCl 2 are mixed is __________.
A) 2Na + (aq) + CO32− (aq) → Na 2 CO 3 (aq)
B) 2 Na + (aq) + 2Cl− (aq) → 2NaCl (aq)
C) Na + (aq) + Cl− (aq) → NaCl (aq)
D) Ca 2+ (aq) + CO 32− (aq) → CaCO 3 (s)
E) Na 2 CO 3 (aq) + CaCl 2 (aq) → 2NaCl (aq) + CaCO 3 (s)
Answer: D
Diff: 3
Page Ref: Sec. 4.2
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