Question 1

‪  
Determining Oxidation Numbers
-Determine the oxidation state of the carbon atom shown in bold in the following compound:

Accepted Answer

A)   -1
B)   0
C)   +1
D)   +4
E)   none of theseF) A) and D)
G) A) and B)

Question 2

What will be the coefficients of Ce4+ and Cl - , respectively when the following reaction is balanced?
Ce4+(aq)  + Cl - (aq)    →\rightarrow→   Cl2(aq)  + Ce3+(aq)

Accepted Answer

A)   1,1
B)   1,2
C)   2.1
D)   2.2
E)   3,1 F) D) and E)
G) C) and D)

Question 3

For the reaction:
3 Sn2+(aq)  + Cr2O72-(aq)  + 14 H+(aq)    →\rightarrow→   3 Sn4+(aq)  + 2 Cr3+(aq)  + 7 H2O(l) 
Which of the following statements is true?

Accepted Answer

A)   Both Sn2+ and H+ are oxidizing agents.
B)   Cr2O72- is the oxidizing agent.
C)   Sn2+ is reduced.
D)   The acid isn't important to the reaction.
E)   None of the above are true. F) B) and D)
G) B) and C)

Question 4

Which statement correctly describes the following oxidation-reduction reaction?
5Cr3+(aq)  + 3 MnO4 - (aq)  + 8 H2O (l)    →\rightarrow→   5 CrO42 - (aq)  + 3 Mn2+(aq)  + 16 H+(aq)

Accepted Answer

A)   MnO4 -  and H2O are both reduced.
B)   Cr3+ is the reducing agent.
C)   Cr3+ and H2O are both reducing agents.
D)   MnO4 -  is oxidized.
E)   None of these are correct. F) C) and D)
G) D) and E)

Question 5

Identify each of the requested compounds for the following redox reaction.
2 MnO4 - (aq) + 16 H+(aq) + 10 Cl - (aq)  $\rightarrow$  2 Mn2+(aq) + 8 H2O + 5 Cl2(g)
(I) oxidizing agent
(II) reducing agent
(III) conjugate oxidizing agent
(IV) conjugate reducing agent

Accepted Answer

MnO<sub>4</sub> <sup...

Question 6

The half-reaction reduction potentials for the mercury(I) and silver(I) ions are given below.

Accepted Answer

The answer of The half-reaction reduction potentials for the mercury(I)...

Question 7

Use the table of electrode potentials to determine which of the following reactions isn't spontaneous under standard conditions.

Accepted Answer

A)   Zn(s)  + 2 H+(aq)    →\rightarrow→  Zn2+(aq)  + H2(g) 
B)   2 Ag(s)  + Zn2+(aq)    →\rightarrow→   2 Ag+(aq)  + Zn(s) 
C)   Cl2(aq)  + 2 Fe2+(aq)    →\rightarrow→   2 Cl-(aq)  + 2 Fe3+(aq) 
D)   2 Al(s)  + 3/2 O2(g)  + 6 H+(aq)    →\rightarrow→  2 Al3+(aq)  + 3 H2O(l) 
E)   Mg(s)  + Cl2(g)    →\rightarrow→  MgCl2(s)  F) B) and E)
G) A) and E)

Question 8

Which statement correctly describes the following reaction?
O2(g)  + 4 H+(aq)  + 4 Cl - (aq)    →\rightarrow→   2 H2O(l)  + 2 Cl2(g)

Accepted Answer

A)   O2 is a reducing agent.
B)   H+ and Cl -  are oxidized.
C)   H+ is reduced.
D)   H+ is a reducing agent.
E)   Cl - is a reducing agent. F) C) and D)
G) A) and D)

Question 9

The potential of a cell at standard state conditions can be best be described as:

Accepted Answer

A)   Eo
B)   0 volts
C)   negative
D)   more than one volt
E)   None of the aboveF) D) and E)
G) A) and B)

Question 10

Balance the following oxidation-reduction equation.
HI(aq) + HNO3(aq) $\rightarrow$NO(g) + I2(aq)

Accepted Answer

6 HI(aq) + 2 HNO<sub...

Question 11

Use a table of standard reduction potentials to determine which of the following is the strongest oxidizing agent.

Accepted Answer

A)   H2O2 in base
B)   H2O2 in acid
C)   O2 in acid
D)   CrO42- in acid
E)   Br2F) A) and E)
G) B) and D)

Question 12

Which of the following isn't an example of an oxidation-reduction reaction?

Accepted Answer

A)   H2(g)  + Cl2(g)    →\rightarrow→  2 HCl(g) 
B)   Ag+(aq)  + 2 NH3(g)  2(g)  + Cl2(g)    \rightarrow  2 HCl(g)  
B)   Ag+(aq)  + 2 NH3(g)    Ag(NH3) 2+(aq)  
C)   Hg2Cl2(s)  + NH3(g)    \rightarrow   Hg(s)  + HgNH2Cl(s)  
D)   2 Mg(s)  + O2(g)    \rightarrow   2MgO(s)  
E)   Cl2(g)  + 2 Br-(aq)    \rightarrow   2 Cl-(aq)  + Br2(l)  " class="answers-bank-image d-inline" rel="preload" > Ag(NH3) 2+(aq) 
C)   Hg2Cl2(s)  + NH3(g)    →\rightarrow→   Hg(s)  + HgNH2Cl(s) 
D)   2 Mg(s)  + O2(g)    →\rightarrow→   2MgO(s) 
E)   Cl2(g)  + 2 Br-(aq)    →\rightarrow→   2 Cl-(aq)  + Br2(l)  F) C) and D)
G) B) and C)

Question 13

Which of the following reagents should react with H+ to produce H2?

Accepted Answer

A)   either Mg2+ and Cr2+
B)   either Pd and Cr2+
C)   either Pd2+ 
D)   either Mg and Cr
E)   Mg, Cr, and PdF) A) and E)
G) C) and D)

Question 14

Which of the following isn't true?

Accepted Answer

A)   The reducing agent is CuS.
B)   The CuS is oxidized.
C)   The NO3- ion is the oxidizing agent.
D)   The NO3- ion is reduced.
E)   The oxidation number of the copper changes from 0 to +2.F) A) and E)
G) All of the above

Question 15

A voltaic cell is constructed with a Pt wire in an aqueous solution of Br2/Br  - (1M) serving as the cathode and a silver wire in a 1M solution of Ag+ serving as the anode. The potential of the cell was measured to be +0.287 V. The standard reduction potential for Br2/Br -  is 1.087 V.
(I) Write the half-reaction for the reduction taking place in the cell.
(II) Write the half-reaction for the oxidation taking place in the cell.
(III) Write the overall reaction for the oxidation-reduction reaction taking place in the cell.
(IV) Calculate the potential for the Ag/Ag+ half-reaction taking place in the cell.
(V) Determine the standard reduction potential, E°, for the half-reaction below.
Ag+(aq) + e- $\rightarrow$    Ag(s)

Accepted Answer

(I) Br₂ + 2e ^-...

Question 16

Suppose a beer can weighs 40.0 g. Determine the amount of time in hours that a current of 100.0 amp need to be passed through a molten AlF3 electrolysis cell to produce enough Al to replace a discarded beer can. Sketch the electrolysis cell, labeling the electrodes and showing the direction of electron flow in the external circuit as part of your answer.

Accepted Answer

Question 17

‪ 4. A)  +6 B)  +7 C)  +8 D)  -6 E)  -7" class="answers-bank-image d-inline" rel="preload" > 
Determining Oxidation Numbers
-Determine the oxidation number for bromine in HBrO4.

Accepted Answer

A)   +6
B)   +7
C)   +8
D)   -6
E)   -7F) A) and B)
G) A) and C)

Question 18

A current of 10.0 amps over a period of 3.00 hr is passed through a solution of molten KCl. What weight of K metal is produced?

Accepted Answer

A)   0.365 g
B)   0.729 g
C)   21.9 g
D)   43.8 g
E)   87.5 gF) B) and C)
G) None of the above

Question 19

How much Cl2 gas would be collected when a 2.00 M NaCl(aq)  solution is electrolyzed for 2.00 hours with a current of 15.0 amps?

Accepted Answer

A)   0.0220 g
B)   39.7 g
C)   79.4 g
D)   159 g
E)   none of the aboveF) A) and E)
G) A) and C)

Question 20

refer to the following reaction in acid solution.
CuS(s)  + NO3-(aq)  3-(aq)    Cu2+(aq)  + SO42-(aq)  + NO(g)  -In the balanced half-reaction for the NO3- ion, how many electrons are involved? A)  1 B)  2 C)  3 D)  4 E)  none of these" class="answers-bank-image d-inline" rel="preload" > Cu2+(aq)  + SO42-(aq)  + NO(g) 
-In the balanced half-reaction for the NO3- ion, how many electrons are involved?

Accepted Answer

A)   1
B)   2
C)   3
D)   4
E)   none of theseF) A) and D)
G) A) and E)

Exam 12: Oxidation-Reduction Reactions

Balance the following oxidation-reduction equation. HI(aq) + HNO₃(aq) $\rightarrow$ NO(g) + I₂(aq)

Correct Answer
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6 HI(aq) + 2 HNO
View Answer

The half-reaction reduction potentials for the mercury(I) and silver(I) ions are given below.

Correct Answer
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Correct Answer
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(I) Br₂ + 2e ^-...
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Identify each of the requested compounds for the following redox reaction. 2 MnO₄ ^- (aq) + 16 H⁺(aq) + 10 Cl ^- (aq) $\rightarrow$ 2 Mn²⁺(aq) + 8 H₂O + 5 Cl₂(g) (I) oxidizing agent (II) reducing agent (III) conjugate oxidizing agent (IV) conjugate reducing agent

Correct Answer
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MnO₄
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Which statement correctly describes the following oxidation-reduction reaction? 5Cr³⁺(aq) + 3 MnO₄ ^- (aq) + 8 H₂O (l) $\rightarrow$ 5 CrO₄² ^- (aq) + 3 Mn²⁺(aq) + 16 H⁺(aq)

Correct Answer
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Which of the following isn't true?

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What will be the coefficients of Ce⁴⁺ and Cl ^- , respectively when the following reaction is balanced? Ce⁴⁺(aq) + Cl ^- (aq) $\rightarrow$ Cl₂(aq) + Ce³⁺(aq)

Correct Answer
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Use the table of electrode potentials to determine which of the following reactions isn't spontaneous under standard conditions.

Correct Answer
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Use a table of standard reduction potentials to determine which of the following is the strongest oxidizing agent.

Correct Answer
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How much Cl₂ gas would be collected when a 2.00 M NaCl(aq) solution is electrolyzed for 2.00 hours with a current of 15.0 amps?

Correct Answer
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A current of 10.0 amps over a period of 3.00 hr is passed through a solution of molten KCl. What weight of K metal is produced?

Correct Answer
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Which of the following reagents should react with H⁺to produce H₂?

Correct Answer
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‪ Determining Oxidation Numbers -Determine the oxidation number for bromine in HBrO₄.

Correct Answer
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Which of the following isn't an example of an oxidation-reduction reaction?

Correct Answer
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The potential of a cell at standard state conditions can be best be described as:

Correct Answer
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Correct Answer
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refer to the following reaction in acid solution. CuS(s) + NO₃^-(aq) Cu²⁺(aq) + SO₄^2-(aq) + NO(g) -In the balanced half-reaction for the NO₃^- ion, how many electrons are involved?

Correct Answer
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‪ Determining Oxidation Numbers -Determine the oxidation state of the carbon atom shown in bold in the following compound:

Correct Answer
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Which statement correctly describes the following reaction? O₂(g) + 4 H⁺(aq) + 4 Cl ^- (aq) $\rightarrow$ 2 H₂O(l) + 2 Cl₂(g)

Correct Answer
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For the reaction: 3 Sn²⁺(aq) + Cr₂O₇^2-(aq) + 14 H⁺(aq) $\rightarrow$ 3 Sn⁴⁺(aq) + 2 Cr³⁺(aq) + 7 H₂O(l) Which of the following statements is true?

Correct Answer
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Exam 12: Oxidation-Reduction Reactions

Balance the following oxidation-reduction equation. HI(aq) + HNO3(aq) →\rightarrow→ NO(g) + I2(aq)

Correct Answerverified6 HI(aq) + 2 HNOView AnswerShow Answer

The half-reaction reduction potentials for the mercury(I) and silver(I) ions are given below.

Correct AnswerverifiedShow Answer

Correct Answerverified(I) Br2 + 2e -...View AnswerShow Answer

Identify each of the requested compounds for the following redox reaction. 2 MnO4 - (aq) + 16 H+(aq) + 10 Cl - (aq) →\rightarrow→ 2 Mn2+(aq) + 8 H2O + 5 Cl2(g) (I) oxidizing agent (II) reducing agent (III) conjugate oxidizing agent (IV) conjugate reducing agent

Correct AnswerverifiedMnO4 View AnswerShow Answer

Which statement correctly describes the following oxidation-reduction reaction? 5Cr3+(aq) + 3 MnO4 - (aq) + 8 H2O (l) →\rightarrow→ 5 CrO42 - (aq) + 3 Mn2+(aq) + 16 H+(aq)

Correct AnswerverifiedShow Answer

Which of the following isn't true?

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What will be the coefficients of Ce4+ and Cl - , respectively when the following reaction is balanced? Ce4+(aq) + Cl - (aq) →\rightarrow→ Cl2(aq) + Ce3+(aq)

Correct AnswerverifiedShow Answer

Use the table of electrode potentials to determine which of the following reactions isn't spontaneous under standard conditions.

Correct AnswerverifiedShow Answer

Use a table of standard reduction potentials to determine which of the following is the strongest oxidizing agent.

Correct AnswerverifiedShow Answer

How much Cl2 gas would be collected when a 2.00 M NaCl(aq) solution is electrolyzed for 2.00 hours with a current of 15.0 amps?

Correct AnswerverifiedShow Answer

A current of 10.0 amps over a period of 3.00 hr is passed through a solution of molten KCl. What weight of K metal is produced?

Correct AnswerverifiedShow Answer

Which of the following reagents should react with H+ to produce H2?

Correct AnswerverifiedShow Answer

‪ Determining Oxidation Numbers -Determine the oxidation number for bromine in HBrO4.

Correct AnswerverifiedShow Answer

Which of the following isn't an example of an oxidation-reduction reaction?

Correct AnswerverifiedShow Answer

The potential of a cell at standard state conditions can be best be described as:

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

refer to the following reaction in acid solution. CuS(s) + NO3-(aq) Cu2+(aq) + SO42-(aq) + NO(g) -In the balanced half-reaction for the NO3- ion, how many electrons are involved?

Correct AnswerverifiedShow Answer

‪ Determining Oxidation Numbers -Determine the oxidation state of the carbon atom shown in bold in the following compound:

Correct AnswerverifiedShow Answer

Which statement correctly describes the following reaction? O2(g) + 4 H+(aq) + 4 Cl - (aq) →\rightarrow→ 2 H2O(l) + 2 Cl2(g)

Correct AnswerverifiedShow Answer

For the reaction: 3 Sn2+(aq) + Cr2O72-(aq) + 14 H+(aq) →\rightarrow→ 3 Sn4+(aq) + 2 Cr3+(aq) + 7 H2O(l) Which of the following statements is true?

Correct AnswerverifiedShow Answer

Balance the following oxidation-reduction equation. HI(aq) + HNO₃(aq) $\rightarrow$ NO(g) + I₂(aq)

Correct Answer
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6 HI(aq) + 2 HNO
View Answer

Correct Answer
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Correct Answer
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(I) Br₂ + 2e ^-...
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Identify each of the requested compounds for the following redox reaction. 2 MnO₄ ^- (aq) + 16 H⁺(aq) + 10 Cl ^- (aq) $\rightarrow$ 2 Mn²⁺(aq) + 8 H₂O + 5 Cl₂(g) (I) oxidizing agent (II) reducing agent (III) conjugate oxidizing agent (IV) conjugate reducing agent

Correct Answer
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MnO₄
View Answer

Which statement correctly describes the following oxidation-reduction reaction? 5Cr³⁺(aq) + 3 MnO₄ ^- (aq) + 8 H₂O (l) $\rightarrow$ 5 CrO₄² ^- (aq) + 3 Mn²⁺(aq) + 16 H⁺(aq)

Correct Answer
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Correct Answer
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What will be the coefficients of Ce⁴⁺ and Cl ^- , respectively when the following reaction is balanced? Ce⁴⁺(aq) + Cl ^- (aq) $\rightarrow$ Cl₂(aq) + Ce³⁺(aq)

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Correct Answer
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Correct Answer
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How much Cl₂ gas would be collected when a 2.00 M NaCl(aq) solution is electrolyzed for 2.00 hours with a current of 15.0 amps?

Correct Answer
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Correct Answer
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Which of the following reagents should react with H⁺to produce H₂?

Correct Answer
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‪ Determining Oxidation Numbers -Determine the oxidation number for bromine in HBrO₄.

Correct Answer
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refer to the following reaction in acid solution. CuS(s) + NO₃^-(aq) Cu²⁺(aq) + SO₄^2-(aq) + NO(g) -In the balanced half-reaction for the NO₃^- ion, how many electrons are involved?

Correct Answer
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Correct Answer
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Which statement correctly describes the following reaction? O₂(g) + 4 H⁺(aq) + 4 Cl ^- (aq) $\rightarrow$ 2 H₂O(l) + 2 Cl₂(g)

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For the reaction: 3 Sn²⁺(aq) + Cr₂O₇^2-(aq) + 14 H⁺(aq) $\rightarrow$ 3 Sn⁴⁺(aq) + 2 Cr³⁺(aq) + 7 H₂O(l) Which of the following statements is true?

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