Question 1

The species undergoing reduction is referred to as an oxidizing agent.

Accepted Answer

A) True 
 B)False

Question 2

Consider the following reaction: Cu → Cu  2+ + 2e  - 
Which of the following best describes the reaction?

Accepted Answer

A)  Oxidation half-reaction
B)  Reduction half-reaction
C)  Hydrolysis
D)  ExcitationE) A) and D)
F) None of the above A

Question 3

The standard hydrogen electrode (SHE)involves a platinum wire or foil that is the conducting source of electrons; hydrogen gas is bubbled over the electrode at a pressure of 1 atm, and the electrolyte solution is 1 M HCl(aq).

Accepted Answer

A) True 
 B)False

Question 4

In a galvanic cell, reduction occurs at _____.

Accepted Answer

A)  the cathode
B)  a salt bridge
C)  the anode
D)  the external circuitE) A) and B)
F) A) and C)

Question 5

A salt bridge between half-reactions maintains the electrical balance of a galvanic cell. This bridge is filled with:

Accepted Answer

A)  a strong electrolyte.
B)  inert carbon.
C)  a weak electrolyte.
D)  inert helium.E) B) and C)
F) All of the above

Question 6

Reduction occurs at the anode of a galvanic cell.

Accepted Answer

A) True 
 B)False

Question 7

What is the cell potential (E0) for a galvanic cell formed from the following two half-reactions? Assume that the cell temperature is 45°C and the operating pressure is 0.06 atm. 0) for a galvanic cell formed from the following two half-reactions? Assume that the cell temperature is 45°C and the operating pressure is 0.06 atm.   A) 1.03 V B) 1.12 V C) 1.24 V D) 0.36 V" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  1.03 V
B)  1.12 V
C)  1.24 V
D)  0.36 VE) A) and B)
F) B) and C)

Question 8

The rusting of automobile bodies is an example of uniform corrosion.

Accepted Answer

A) True 
 B)False

Question 9

In the context of the cell notation of galvanic cells, the anode is always written on the right and the cathode on the left.

Accepted Answer

A) True 
 B)False

Question 10

The Nernst equation describes the pH required for a spontaneous electrolytic reaction.

Accepted Answer

A) True 
 B)False  False

Question 11

If a chemical species gains electrons in a redox reaction, the species is said to have undergone oxidation.

Accepted Answer

A) True 
 B)False

Question 12

What is the cell potential (E0)  f or a galvanic cell formed from the following two half-reactions? Assume that the cell temperature is 38°C and the operating pressure is 0.04 atm. 0)  f or a galvanic cell formed from the following two half-reactions? Assume that the cell temperature is 38°C and the operating pressure is 0.04 atm.   A) 1.90 V B) 1.95 V C) 1.99 V D) 2.20 V" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  1.90 V
B)  1.95 V
C)  1.99 V
D)  2.20 VE) A) and B)
F) A) and D)

Question 13

By convention, the standard hydrogen electrode (SHE) is assigned a voltage of _____ V .

Accepted Answer

A)  − 1.000
B)  1.000
C)  0.150
D)  0.000E) A) and B)
F) None of the above

Question 14

How many grams of silver are deposited at a platinum cathode in the electrolysis of AgNO  3 (aq) by 5.30 A of electric current in 4.0 hours?

Accepted Answer

A)  85.3 g
B)  42.6 g
C)  121 g
D)  188 gE) A) and C)
F) B) and D)

Question 15

In the context of electrolysis, if the electrodes are chemically inert materials that simply provide a path for electrons, the process is called active electrolysis.

Accepted Answer

A) True 
 B)False  False

Question 16

Consider the following reaction: Na++ e − → Na
Which of the following best describes the reaction?

Accepted Answer

A)  Oxidation half-reaction
B)  Reduction half-reaction
C)  Ionization
D)  DissociationE) All of the above
F) A) and B)

Question 17

Identify the balanced chemical equation for the following cell: 2+( aq ) → Al3+( aq ) + Hg( l )  B) 2 Al( s ) + Hg2+( aq ) → 2 Al3+( aq ) + Hg( l )  C) Al( s ) + 3 Hg2+( aq ) → Al3+( aq ) + 3 Hg( l )  D) 2 Al( s ) + 3 Hg2+( aq ) → 2 Al3+( aq ) + 3 Hg( l ) " class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  Al( s ) + Hg2+( aq ) → Al3+( aq ) + Hg( l ) 
B)  2 Al( s ) + Hg2+( aq ) → 2 Al3+( aq ) + Hg( l ) 
C)  Al( s ) + 3 Hg2+( aq ) → Al3+( aq ) + 3 Hg( l ) 
D)  2 Al( s ) + 3 Hg2+( aq ) → 2 Al3+( aq ) + 3 Hg( l ) E) C) and D)
F) B) and C)

Question 18

In any galvanic cell, the half-reaction with the more positive reduction potential will be the cathode.

Accepted Answer

A) True 
 B)False

Question 19

What is the cell potential (E  0 ) for a galvanic cell formed from the following two half- reactions?  0 ) for a galvanic cell formed from the following two half- reactions?   A) +1.334 V B) − 2.046 V C) +2.046 V D) +2.758 V" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  +1.334 V
B)  − 2.046 V
C)  +2.046 V
D)  +2.758 VE) B) and C)
F) A) and D)

Question 20

All dry cell batteries are rechargeable.

Accepted Answer

A) True 
 B)False

Exam 13: Electrochemistry

The species undergoing reduction is referred to as an oxidizing agent.

Correct AnswerverifiedShow Answer

Consider the following reaction: Cu → Cu 2+ + 2e - Which of the following best describes the reaction?

Correct AnswerverifiedA

The standard hydrogen electrode (SHE)involves a platinum wire or foil that is the conducting source of electrons; hydrogen gas is bubbled over the electrode at a pressure of 1 atm, and the electrolyte solution is 1 M HCl(aq).

Correct AnswerverifiedShow Answer

In a galvanic cell, reduction occurs at _____.

Correct AnswerverifiedShow Answer

A salt bridge between half-reactions maintains the electrical balance of a galvanic cell. This bridge is filled with:

Correct AnswerverifiedShow Answer

Reduction occurs at the anode of a galvanic cell.

Correct AnswerverifiedShow Answer

What is the cell potential (E0) for a galvanic cell formed from the following two half-reactions? Assume that the cell temperature is 45°C and the operating pressure is 0.06 atm.

Correct AnswerverifiedShow Answer

The rusting of automobile bodies is an example of uniform corrosion.

Correct AnswerverifiedShow Answer

In the context of the cell notation of galvanic cells, the anode is always written on the right and the cathode on the left.

Correct AnswerverifiedShow Answer

The Nernst equation describes the pH required for a spontaneous electrolytic reaction.

Correct AnswerverifiedFalse

If a chemical species gains electrons in a redox reaction, the species is said to have undergone oxidation.

Correct AnswerverifiedShow Answer

What is the cell potential (E0) f or a galvanic cell formed from the following two half-reactions? Assume that the cell temperature is 38°C and the operating pressure is 0.04 atm.

Correct AnswerverifiedShow Answer

By convention, the standard hydrogen electrode (SHE) is assigned a voltage of _____ V .

Correct AnswerverifiedShow Answer

How many grams of silver are deposited at a platinum cathode in the electrolysis of AgNO 3 (aq) by 5.30 A of electric current in 4.0 hours?

Correct AnswerverifiedShow Answer

In the context of electrolysis, if the electrodes are chemically inert materials that simply provide a path for electrons, the process is called active electrolysis.

Correct AnswerverifiedFalse

Consider the following reaction: Na++ e − → Na Which of the following best describes the reaction?

Correct AnswerverifiedShow Answer

Identify the balanced chemical equation for the following cell:

Correct AnswerverifiedShow Answer

In any galvanic cell, the half-reaction with the more positive reduction potential will be the cathode.

Correct AnswerverifiedShow Answer

What is the cell potential (E 0 ) for a galvanic cell formed from the following two half- reactions?

Correct AnswerverifiedShow Answer

All dry cell batteries are rechargeable.

Correct AnswerverifiedShow Answer

Correct Answer
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Consider the following reaction: Cu → Cu ²⁺+ 2e ^- Which of the following best describes the reaction?

Correct Answer
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A

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What is the cell potential (E⁰) for a galvanic cell formed from the following two half-reactions? Assume that the cell temperature is 45°C and the operating pressure is 0.06 atm.

Correct Answer
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False

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What is the cell potential (E⁰) f or a galvanic cell formed from the following two half-reactions? Assume that the cell temperature is 38°C and the operating pressure is 0.04 atm.

Correct Answer
verified

Correct Answer
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How many grams of silver are deposited at a platinum cathode in the electrolysis of AgNO ₃(aq) by 5.30 A of electric current in 4.0 hours?

Correct Answer
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Correct Answer
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False

Consider the following reaction: Na⁺+ e⁻→ Na Which of the following best describes the reaction?

Correct Answer
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What is the cell potential (E ⁰) for a galvanic cell formed from the following two half- reactions?

Correct Answer
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Correct Answer
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