Question 1

Identify a true statement about a redox reaction.

Accepted Answer

A)  It involves a transfer of protons from one species to another.
B)  It creates electrons.
C)  It involves a transfer of electrons between two species.
D)  It is always nonspontaneous.E) A) and C)
F) A) and B)

Question 2

The most common fuel cells are based on the reaction of _____.

Accepted Answer

A)  nickel and oxygen to produce nickel oxide
B)  hydrogen and oxygen to produce water
C)  lead and sulfuric acid to produce lead sulfate
D)  zinc and air to produce zinc oxideE) A) and D)
F) C) and D)

Question 3

Single use, non-rechargeable batteries are referred to as _____.

Accepted Answer

A)  primary cells
B)  secondary cells
C)  tertiary cells
D)  electrolytic cellsE) C) and D)
F) All of the above

Question 4

In the following galvanic cell:  , the right-hand side of this notation represents the:

Accepted Answer

A)  spontaneous half of the reaction.
B)  oxidation half-reaction.
C)  anode of the cell.
D)  reduction half-reaction.E) A) and D)
F) A) and C)

Question 5

The rusting of the sheet metal of a car is an example of:

Accepted Answer

A)  uniform corrosion.
B)  galvanic corrosion.
C)  electrolysis.
D)  galvanized steel.E) All of the above
F) None of the above

Question 6

An electrolysis cell that deposits copper (from Cu  2+ ions) operates for 30 minutes at an electric current of 3.20 A. What mass of copper is deposited?

Accepted Answer

A)  1.9 g
B)  2.3 g
C)  3.5 g
D)  4.2 gE) B) and D)
F) A) and C)

Question 7

A positive voltage in the standard reduction potential means that the half-reaction proceeds as a reduction when connected to the standard hydrogen electrode (SHE)because the SHE is serving as the anode .

Accepted Answer

A) True 
 B)False

Question 8

Which of the following species undergoes oxidation in the formation of iron (III) oxide?

Accepted Answer

A)  FeO
B)  Fe2O3
C)  Fe
D)  O2E) A) and D)
F) All of the above

Question 9

Which of the following species undergoes reduction in the formation of iron (III) oxide?

Accepted Answer

A)  FeO
B)  Fe2O3
C)  Fe
D)  O2E) B) and D)
F) C) and D)

Question 10

A galvanic cell is an electrochemical cell in which a spontaneous chemical reaction can be used to generate an electrical current.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following cells is most likely to be an example of a galvanic cell?

Accepted Answer

A)  Zn(s) | Zn  2+ || Cu  2+ | Cu(s) 
B)  Cu(s) | Cu  2+ || Fe  2+ | Fe(s) 
C)  Au(s) | Au  + || Ag  + | Ag(s) 
D)  Sn(s) | Sn  2+ || Fe  2+ | Fe(s) E) A) and B)
F) A) and C)

Question 12

In the context of cell notations in galvanic cells, a phase boundary is denoted by _____.

Accepted Answer

A)  |
B)  ||
C)  -
D)  =E) C) and D)
F) None of the above

Question 13

Secondary cells are rechargeable.

Accepted Answer

A) True 
 B)False

Question 14

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) − 2.31 V B) +4.33 V C) − 1.32 V D) +2.00 V" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  − 2.31 V
B)  +4.33 V
C)  − 1.32 V
D)  +2.00 VE) B) and C)
F) C) and D)

Question 15

If an electrochemical half-reaction includes the production or consumption of a gas, the standard state is a pressure of 1 atm.

Accepted Answer

A) True 
 B)False

Question 16

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 .43 V B) +1.43 V C) −0 .93 V D) +0.93 V" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  −1 .43 V
B)  +1.43 V
C)  −0 .93 V
D)  +0.93 VE) B) and D)
F) A) and B)

Question 17

Suppose that you have an iron rod that requires copper coating. You have calculated that you need to deposit 4.00 g of copper to achieve an adequate coating. If your electrolysis cell (using Cu 2+) runs at 1.5 A, how long must you operate the cell to obtain the desired coating?

Accepted Answer

A)  1 hour and 12 minutes
B)  2 hours and 15 minutes
C)  3 hours and 22 minutes
D)  4 hours and 35 minutesE) A) and D)
F) B) and C)

Question 18

Which of the following represents the Nernst equation?

Accepted Answer

A)   
B)   
C)   
D)   E) A) and B)
F) B) and C)

Question 19

Galvanic corrosion occurs only when two different metals contact each other in the presence of an appropriate electrolyte.

Accepted Answer

A) True 
 B)False

Question 20

The most prevalent type of primary battery in use today is _____.

Accepted Answer

A)  the rechargeable batter y
B)  the lead-acid storage battery
C)  the alkaline batter y
D)  the nickel-metal-hydride batteryE) A) and B)
F) B) and D)

Exam 13: Electrochemistry

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

Correct AnswerverifiedShow Answer

Secondary cells are rechargeable.

Correct AnswerverifiedShow Answer

If an electrochemical half-reaction includes the production or consumption of a gas, the standard state is a pressure of 1 atm.

Correct AnswerverifiedShow Answer

The most prevalent type of primary battery in use today is _____.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The rusting of the sheet metal of a car is an example of:

Correct AnswerverifiedShow Answer

Which of the following species undergoes reduction in the formation of iron (III) oxide?

Correct AnswerverifiedShow Answer

Galvanic corrosion occurs only when two different metals contact each other in the presence of an appropriate electrolyte.

Correct AnswerverifiedShow Answer

In the context of cell notations in galvanic cells, a phase boundary is denoted by _____.

Correct AnswerverifiedShow Answer

A positive voltage in the standard reduction potential means that the half-reaction proceeds as a reduction when connected to the standard hydrogen electrode (SHE)because the SHE is serving as the anode .

Correct AnswerverifiedShow Answer

Which of the following species undergoes oxidation in the formation of iron (III) oxide?

Correct AnswerverifiedShow Answer

A galvanic cell is an electrochemical cell in which a spontaneous chemical reaction can be used to generate an electrical current.

Correct AnswerverifiedShow Answer

Single use, non-rechargeable batteries are referred to as _____.

Correct AnswerverifiedShow Answer

Identify a true statement about a redox reaction.

Correct AnswerverifiedShow Answer

In the following galvanic cell: , the right-hand side of this notation represents the:

Correct AnswerverifiedShow Answer

The most common fuel cells are based on the reaction of _____.

Correct AnswerverifiedShow Answer

Which of the following cells is most likely to be an example of a galvanic cell?

Correct AnswerverifiedShow Answer

Suppose that you have an iron rod that requires copper coating. You have calculated that you need to deposit 4.00 g of copper to achieve an adequate coating. If your electrolysis cell (using Cu 2+) runs at 1.5 A, how long must you operate the cell to obtain the desired coating?

Correct AnswerverifiedShow Answer

Which of the following represents the Nernst equation?

Correct AnswerverifiedShow Answer

An electrolysis cell that deposits copper (from Cu 2+ ions) operates for 30 minutes at an electric current of 3.20 A. What mass of copper is deposited?

Correct AnswerverifiedShow Answer

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

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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Suppose that you have an iron rod that requires copper coating. You have calculated that you need to deposit 4.00 g of copper to achieve an adequate coating. If your electrolysis cell (using Cu ²⁺) runs at 1.5 A, how long must you operate the cell to obtain the desired coating?

Correct Answer
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Correct Answer
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An electrolysis cell that deposits copper (from Cu ²⁺ions) operates for 30 minutes at an electric current of 3.20 A. What mass of copper is deposited?

Correct Answer
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