Question 1

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) All of the above
G) A) and E)

Question 2

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) A) and B)
G) None of the above

Question 3

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) A) and E)
G) A) and C) A

Question 4

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...

Question 5

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) A) and C)

Question 6

Which of the following is a weak acid?

Accepted Answer

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

Question 7

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 B)
G) B) and C) B

Question 8

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 D)
G) D) and E)

Question 9

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

Accepted Answer

A) True 
 B)False

Question 10

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) D) and E)
G) A) and B)

Question 11

The oxidation number for a pure element is always zero.

Accepted Answer

A) True 
 B)False

Question 12

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) A) and D)
G) A) and E)

Question 13

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) A) and E)
G) None of the above

Question 14

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) A) and E)
G) None of the above C

Question 15

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 D)
G) None of the above

Question 16

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) A) and D)
G) A) and C)

Question 17

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) B) and E)

Question 18

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) A) and C)

Question 19

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) A) and D)

Question 20

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) B) and C)
G) A) and D)

Exam 4: Reactions in Aqueous Solutions

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

Correct AnswerverifiedShow Answer

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

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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 AnswerverifiedA

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following is a weak acid?

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

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

Correct AnswerverifiedShow Answer

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

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

The oxidation number for a pure element is always zero.

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 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

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

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

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

Correct AnswerverifiedShow Answer

Which one of the following is a strong acid?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

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

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

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)

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A

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

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B

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

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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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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 Answer
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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

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

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

Correct Answer
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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?

Correct Answer
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