Question 1

Which salt is produced by the neutralization of potassium hydroxide with sulfuric acid?

Accepted Answer

A)   KSO3
B)   K2(SO4) 3
C)   K2SO4
D)   K(SO4) 2
E)   KSO4F) A) and B)
G) D) and E)

Question 2

Identify the oxidizing agent in the chemical reaction 2MnO4- + 5H2SO3→ 2Mn2+ + 5SO42- + 4H+ + 3H2O.

Accepted Answer

A)   MnO4-
B)   H2SO3
C)   Mn2+
D)   SO42-
E)   H+F) B) and E)
G) C) and D)

Question 3

What volume of water must be added to 300 mL of 0.75 M HCl to dilute the solution to 0.25 M?

Accepted Answer

A)   900 mL
B)   600 mL
C)   300 mL
D)   930 mL
E)   100 mLF) A) and E)
G) C) and D) B

Question 4

An electrolyte is a substance that dissolves in water to yield a solution that conducts electricity.

Accepted Answer

A) True 
 B)False

Question 5

Which is the net ionic equation for the reaction between aqueous solutions of lithium hydroxide and hydrobromic acid? LiOH(aq)  + HBr(aq)  → H2O(l)  + LiBr(aq)

Accepted Answer

A)   LiOH(aq)  → Li+(aq)  + OH-(aq) 
B)   HBr(aq)  → H+(aq)  + Br-(aq) 
C)   H+(aq)  + OH-(aq)  → H2O(l) 
D)   Li+(aq)  + Br-(aq)  → LiBr(aq) 
E)   Li+(aq)  + OH-(aq) + H+(aq)  + Br-(aq)  → H2O(l)  + LiBr(aq) F) C) and E)
G) A) and D)

Question 6

Identify the reducing agent in the chemical reaction Cd + NiO2 + 2H2O → Cd(OH) 2 + Ni(OH) 2

Accepted Answer

A)   Cd
B)   NiO2
C)   H2O
D)   Cd(OH) 2
E)   Ni(OH) 2F) A) and E)
G) A) and C)

Question 7

If aqueous solutions of Ba(OH) 2 and HNO3 are mixed, what products are formed?

Accepted Answer

A)   BaN2(s)  + H2O(l) 
B)   Ba(NO3) 2(aq)  + H2O(l) 
C)   Ba(s)  + H2(g)  + NO2(g) 
D)   Ba2O(s)  + NO2(g)  + H2O(l) 
E)   Ba3N2(s)  + H2O(l) F) A) and B)
G) B) and E)

Question 8

The oxidation number for a pure element is always zero.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following is a correct description of a solution?

Accepted Answer

A)   A solution is a heterogeneous mixture of two or more substances.
B)   A solution is a homogeneous mixture of two or more substances.
C)   A solution may be a gas, solid, or liquid.
D)   A solution is any mixture of two or more substances.
E)   The second and third choices are correct.F) A) and E)
G) None of the above

Question 10

Starting with a 1.35 M HCl stock solution, five standard solutions are prepared by sequentially diluting 5.00 mL of each solution to 100.0 mL. What is the concentration of the final solution?

Accepted Answer

A)   3.38 × 10-3 M
B)   1.69 × 10-4 M
C)   6.25 × 10-2 M
D)   4.22 × 10-7 M
E)   1.35 MF) B) and E)
G) None of the above

Question 11

Which of the following is a weak acid?

Accepted Answer

A)   H2SO4
B)   HNO3
C)   HF
D)   HBr
E)   HClF) A) and B)
G) D) and E)

Question 12

Complete the following reaction and identify the Brønsted base: NaOH(aq)  + HCl(aq)  →

Accepted Answer

A)   Na(aq)  + HOCl(aq) ; NaOH is the base.
B)   NaCl(aq)  + OH-(aq) ; HCl is the base.
C)   NaCl(aq)  + OH-(aq) ; NaOH is the base.
D)   H2O(l)  + NaCl(aq) ; HCl is the base.
E)   NaCl(aq) + H2O(l) ; NaOH is the base.F) B) and C)
G) A) and C)

Question 13

A 34.62-mL sample of 0.1510 M NaOH was needed to neutralize 50.0 mL of an H2SO4 solution. What is the concentration of the original sulfuric acid solution?

Accepted Answer

A)   0.0229 M
B)   0.218 M
C)   0.0523 M
D)   0.209 M
E)   0.105 MF) B) and D)
G) C) and D)

Question 14

What is the net ionic equation for the reaction that occurs when aqueous solutions of Pb(NO3) 2 and NH4Cl are mixed?

Accepted Answer

A)   Pb(NO3) 2(aq)  + 2NH4Cl(aq)  → 2NH4NO3(aq)  + PbCl2(s) 
B)   Pb2+(aq)  + 2Cl-(aq)  → PbCl2(s) 
C)   Pb2+(aq)  + 2NO3-(aq)  + 2NH4+(aq)  + 2Cl-(aq)  → 2NH4+(aq)  + 2NO3-(aq)  + PbCl2(s) 
D)   NH4+(aq)  + NO3-(aq)  → NH4NO3(s) 
E)   NH4+(aq)  + NO3-(aq)  → 2NO(g)  + 2H2O(l) F) A) and D)
G) A) and C)

Question 15

Which salt is produced by the neutralization of hydrobromic acid with magnesium hydroxide?

Accepted Answer

A)   MgBr
B)   Mg2Br3
C)   MgBr2
D)   Mg3Br2
E)   Mg2BrF) B) and C)
G) A) and C)

Question 16

Balance the following oxidation-reduction equation: Al(s)  + Ag+(aq)  → Al3+(aq)  + Ag(s)

Accepted Answer

A)   Al(s)  + Ag+(aq)  → Al3+(aq)  + Ag(s) 
B)   3Al(s)  + Ag+(aq)  → 3Al3+(aq)  + Ag(s) 
C)   Al(s)  + 3Ag+(aq)  → Al3+(aq)  + 3Ag(s) 
D)   3Al(s)  + Ag+(aq)  → Al3+(aq)  + 3Ag(s) 
E)   Al(s)  + 3Ag+(aq)  → 3Al3+(aq)  + Ag(s) F) B) and E)
G) A) and B)

Question 17

What is the reducing agent in the following reaction? 5Fe2+(aq)  + MnO4-(aq)  + 8H+(aq)  → 5Fe3+(aq)  + Mn2+(aq)  + 4H2O(l)

Accepted Answer

A)   Fe2+
B)   MnO4-
C)   H+
D)   Mn2+
E)   Fe3+F) D) and E)
G) A) and B) A

Question 18

If aqueous solutions of KMnO4, FeSO4 and H2SO4, are mixed, which ions are spectator ions? 2KMnO4(aq)  + 10FeSO4(aq)  + 8H2SO4(aq)  → K2SO4(aq)  + 2MnSO4(aq)  + 5Fe2(SO4) 3(aq)  + 8H2O(l)

Accepted Answer

A)   only K+
B)   only SO42-
C)   only K+ and SO42-
D)   only K+, SO42-, and Fe2+
E)   only K+, SO42-, Fe2+, and Mn2+F) D) and E)
G) A) and B) C

Question 19

Which one of the following is a strong acid?

Accepted Answer

A)   H2CO3
B)   H2SO3
C)   H2SO4
D)   H3PO4
E)   CH3COOHF) A) and C)
G) A) and D)

Question 20

A(n) ________ ________ is oxidized during a redox reaction and causes another substance to undergo reduction.

Accepted Answer

The answer of A(n) ________ ________ is oxidized during a...

Exam 4: Reactions in Aqueous Solutions

Which salt is produced by the neutralization of potassium hydroxide with sulfuric acid?

Correct AnswerverifiedShow Answer

Identify the oxidizing agent in the chemical reaction 2MnO4- + 5H2SO3→ 2Mn2+ + 5SO42- + 4H+ + 3H2O.

Correct AnswerverifiedShow Answer

What volume of water must be added to 300 mL of 0.75 M HCl to dilute the solution to 0.25 M?

Correct AnswerverifiedB

An electrolyte is a substance that dissolves in water to yield a solution that conducts electricity.

Correct AnswerverifiedShow Answer

Which is the net ionic equation for the reaction between aqueous solutions of lithium hydroxide and hydrobromic acid? LiOH(aq) + HBr(aq) → H2O(l) + LiBr(aq)

Correct AnswerverifiedShow Answer

Identify the reducing agent in the chemical reaction Cd + NiO2 + 2H2O → Cd(OH) 2 + Ni(OH) 2

Correct AnswerverifiedShow Answer

If aqueous solutions of Ba(OH) 2 and HNO3 are mixed, what products are formed?

Correct AnswerverifiedShow Answer

The oxidation number for a pure element is always zero.

Correct AnswerverifiedShow Answer

Which of the following is a correct description of a solution?

Correct AnswerverifiedShow Answer

Starting with a 1.35 M HCl stock solution, five standard solutions are prepared by sequentially diluting 5.00 mL of each solution to 100.0 mL. What is the concentration of the final solution?

Correct AnswerverifiedShow Answer

Which of the following is a weak acid?

Correct AnswerverifiedShow Answer

Complete the following reaction and identify the Brønsted base: NaOH(aq) + HCl(aq) →

Correct AnswerverifiedShow Answer

A 34.62-mL sample of 0.1510 M NaOH was needed to neutralize 50.0 mL of an H2SO4 solution. What is the concentration of the original sulfuric acid solution?

Correct AnswerverifiedShow Answer

What is the net ionic equation for the reaction that occurs when aqueous solutions of Pb(NO3) 2 and NH4Cl are mixed?

Correct AnswerverifiedShow Answer

Which salt is produced by the neutralization of hydrobromic acid with magnesium hydroxide?

Correct AnswerverifiedShow Answer

Balance the following oxidation-reduction equation: Al(s) + Ag+(aq) → Al3+(aq) + Ag(s)

Correct AnswerverifiedShow Answer

What is the reducing agent in the following reaction? 5Fe2+(aq) + MnO4-(aq) + 8H+(aq) → 5Fe3+(aq) + Mn2+(aq) + 4H2O(l)

Correct AnswerverifiedA

If aqueous solutions of KMnO4, FeSO4 and H2SO4, are mixed, which ions are spectator ions? 2KMnO4(aq) + 10FeSO4(aq) + 8H2SO4(aq) → K2SO4(aq) + 2MnSO4(aq) + 5Fe2(SO4) 3(aq) + 8H2O(l)

Correct AnswerverifiedC

Which one of the following is a strong acid?

Correct AnswerverifiedShow Answer

A(n) ________ ________ is oxidized during a redox reaction and causes another substance to undergo reduction.

Correct AnswerverifiedShow Answer

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Identify the oxidizing agent in the chemical reaction 2MnO₄^- + 5H₂SO₃→ 2Mn²⁺ + 5SO₄^2-+ 4H⁺ + 3H₂O.

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B

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Which is the net ionic equation for the reaction between aqueous solutions of lithium hydroxide and hydrobromic acid? LiOH(aq) + HBr(aq) → H₂O(l) + LiBr(aq)

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Identify the reducing agent in the chemical reaction Cd + NiO₂ + 2H₂O → Cd(OH) ₂ + Ni(OH) ₂

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If aqueous solutions of Ba(OH) ₂ and HNO₃ are mixed, what products are formed?

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A 34.62-mL sample of 0.1510 M NaOH was needed to neutralize 50.0 mL of an H₂SO₄ solution. What is the concentration of the original sulfuric acid solution?

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What is the net ionic equation for the reaction that occurs when aqueous solutions of Pb(NO₃) ₂ and NH₄Cl are mixed?

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Balance the following oxidation-reduction equation: Al(s) + Ag⁺(aq) → Al³⁺(aq) + Ag(s)

Correct Answer
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What is the reducing agent in the following reaction? 5Fe²⁺(aq) + MnO₄^-(aq) + 8H⁺(aq) → 5Fe³⁺(aq) + Mn²⁺(aq) + 4H₂O(l)

Correct Answer
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A

If aqueous solutions of KMnO₄, FeSO₄ and H₂SO_4, are mixed, which ions are spectator ions? 2KMnO₄(aq) + 10FeSO₄(aq) + 8H₂SO₄(aq) → K₂SO₄(aq) + 2MnSO₄(aq) + 5Fe₂(SO₄) ₃(aq) + 8H₂O(l)

Correct Answer
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C

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A(n) is oxidized during a redox reaction and causes another substance to undergo reduction.

Correct Answer
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