Question 1

What is the name of a galvanic cell that requires a continuous supply of reactants to keep functioning?

Accepted Answer

The answer of What is the name of a galvanic...

Question 2

Which is incorrect?

Accepted Answer

A)   At equilibrium, Ecell = 0.
B)   E > 0 for a spontaneous process.
C)   E = 0 for a spontaneous process.
D)   ΔG 
E)   ΔG = 0 at equilibrium.F) B) and D)
G) All of the above

Question 3

What is E°cell for the following reaction? Al(s)  + 3Ag+(aq)  → Al3+(aq)  + 3Ag(s)  cell for the following reaction? Al(s)  + 3Ag+(aq)  → Al3+(aq)  + 3Ag(s)    A)  -2.46 V B)  0.86 V C)  -0.86 V D)  2.46 V E)  4.06 V" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   -2.46 V
B)   0.86 V
C)   -0.86 V
D)   2.46 V
E)   4.06 VF) B) and E)
G) None of the above

Question 4

A voltaic cell consists of a Mn/Mn2+ electrode (E° = -1.18 V)  and a Fe/Fe2+ electrode (E° = -0.44 V) . Calculate [Fe2+] if [Mn2+] = 0.050 M and Ecell = 0.78 V at 25°C.

Accepted Answer

A)   0.040 M
B)   0.24 M
C)   1.1 M
D)   1.8 M
E)   None of these choices is correct.F) A) and B)
G) A) and E)

Question 5

What is the name given to the experimental apparatus for generating electricity through the use of a spontaneous redox reaction?

Accepted Answer

A)   Electrolytic cell
B)   Galvanic cell
C)   Redox cell
D)   Cathode
E)   AnodeF) C) and D)
G) A) and B)

Question 6

Consider the reaction CuO(s)  + H2(g)  → Cu(s)  + H2O(l) 
In this reaction, which substances are the oxidizing agent and reducing agent, respectively?

Accepted Answer

A)   CuO and H2
B)   H2 and CuO
C)   CuO and Cu
D)   H2O and H2
E)   Cu and H2OF) A) and C)
G) A) and B)

Question 7

Which electrochemical cell pictured below corresponds to the following cell diagram? Cr(s)  | Cr3+(aq, 1.0 M)  || Sn2+(aq, 1.0 M)  | Sn(s)

Accepted Answer

A)   3+(aq, 1.0 M)  || Sn2+(aq, 1.0 M)  | Sn(s)  
A)     
B)     
C)     
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
B)   3+(aq, 1.0 M)  || Sn2+(aq, 1.0 M)  | Sn(s)  
A)     
B)     
C)     
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
C)   3+(aq, 1.0 M)  || Sn2+(aq, 1.0 M)  | Sn(s)  
A)     
B)     
C)     
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
D)   3+(aq, 1.0 M)  || Sn2+(aq, 1.0 M)  | Sn(s)  
A)     
B)     
C)     
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >
E)   3+(aq, 1.0 M)  || Sn2+(aq, 1.0 M)  | Sn(s)  
A)     
B)     
C)     
D)     
E)    " class="answers-bank-image d-inline" rel="preload" >F) A) and B)
G) B) and C)

Question 8

Predict the products obtained from the electrolysis of a 1 M AlBr3 solution. 3 solution.   A)  Al and Br2 B)  Al and O2 C)  H2 and O2 D)  H2 and Br2 E)  Al and H2" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   Al and Br2
B)   Al and O2
C)   H2 and O2
D)   H2 and Br2
E)   Al and H2F) B) and C)
G) C) and D)

Question 9

Which metal is not capable of acting as a sacrificial anode when used with iron pipe?

Accepted Answer

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

Question 10

When the following redox equation is balanced with the smallest whole number coefficients, what is the coefficient for nitrogen dioxide? I2(s)  + HNO3(aq)  → HIO3(aq)  + NO2(g)  + H2O(l)

Accepted Answer

A)   1
B)   2
C)   4
D)   5
E)   10F) A) and B)
G) A) and C)

Question 11

A lead-storage battery is not rechargeable.

Accepted Answer

A) True 
 B)False

Question 12

When the following redox equation is balanced with the smallest whole number coefficients, what is the coefficient of Sb3+(aq) ? BrO3-(aq)  + Sb3+(aq)  → Br-(aq)  + Sb5+(aq)  (acidic solution)

Accepted Answer

A)   1
B)   2
C)   3
D)   4
E)   6F) A) and B)
G) A) and E)

Question 13

Consider the reaction of iodine with manganese dioxide. 3I2(s)  + 2MnO2(s)  + 8OH-(aq)  2(s)  + 2MnO2(s)  + 8OH-(aq)    6I-(aq)  + 2MnO4-(aq)  + 4H2O(l)  The equilibrium constant for the overall reaction is 8.3 × 10-7. What is E°cell for the reaction at 25°C? (R = 8.314 J/K • mol, F = 96,500 C • mol-1)  A)  -0.36 V B)  -0.18 V C)  -0.12 V D)  -0.060 V E)  +0.12 V" class="answers-bank-image d-inline" rel="preload" > 6I-(aq)  + 2MnO4-(aq)  + 4H2O(l) 
The equilibrium constant for the overall reaction is 8.3 × 10-7. What is E°cell for the reaction at 25°C? (R = 8.314 J/K • mol, F = 96,500 C • mol-1)

Accepted Answer

A)   -0.36 V
B)   -0.18 V
C)   -0.12 V
D)   -0.060 V
E)   +0.12 VF) A) and B)
G) None of the above

Question 14

An electroplating solution is made up of nickel(II) sulfate. How much time would it take to deposit 0.500 g of metallic nickel on a custom car part using a current of 3.00 A?

Accepted Answer

9.13 min o...

Question 15

Which is the Nernst equation?

Accepted Answer

A)   
B)   
C)   
D)   
E)   None of these statements is correct.F) A) and B)
G) A) and C)

Question 16

In a fuel cell, an external source of electrical power is used to drive a nonspontaneous reaction in which a fuel is produced.

Accepted Answer

A) True 
 B)False

Question 17

A current of 250. A flows for 24.0 hours at an anode where the reaction occurring is as follows: Mn2+(aq)  + 2H2O(l)  → MnO2(s)  + 4H+(aq)  + 2e- 
What mass of MnO2 is deposited at this anode?

Accepted Answer

A)   19.5 kg
B)   12.9 kg
C)   9.73 kg
D)   4.87 kg
E)   2.43 kgF) A) and E)
G) A) and D)

Question 18

When the following redox equation is balanced with the smallest whole number coefficients, the coefficient for the hydrogen sulfate ion will be ________. Al(s)  + HSO4-(aq)  + OH-(aq)  → Al2O3(s)  + S2-(aq)  + H2O(l)

Accepted Answer

A)   1
B)   3
C)   4
D)   6
E)   8F) C) and E)
G) B) and D)

Question 19

Complete and balance the following redox equation. When properly balanced using the smallest whole-number coefficients, the coefficient of S is H2S + HNO3 → S + NO + H2O (acidic solution)

Accepted Answer

A)   1.
B)   2.
C)   3.
D)   5.
E)   6.F) A) and E)
G) B) and E)

Question 20

What is E°cell for the reaction of nickel(II)  ions with cadmium metal at 25°C? (R = 8.314 J/K • mol, F = 96,500 C • mol -1)  cell for the reaction of nickel(II)  ions with cadmium metal at 25°C? (R = 8.314 J/K • mol, F = 96,500 C • mol -1)    A)  0.0750 V B)  0.100 V C)  0.120 V D)  0.150 V E)  0.300 V" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   0.0750 V
B)   0.100 V
C)   0.120 V
D)   0.150 V
E)   0.300 VF) B) and E)
G) A) and D)

Exam 19: Electrochemistry

A voltaic cell consists of a Mn/Mn2+ electrode (E° = -1.18 V) and a Fe/Fe2+ electrode (E° = -0.44 V) . Calculate [Fe2+] if [Mn2+] = 0.050 M and Ecell = 0.78 V at 25°C.

Correct AnswerverifiedShow Answer

When the following redox equation is balanced with the smallest whole number coefficients, the coefficient for the hydrogen sulfate ion will be ________. Al(s) + HSO4-(aq) + OH-(aq) → Al2O3(s) + S2-(aq) + H2O(l)

Correct AnswerverifiedShow Answer

When the following redox equation is balanced with the smallest whole number coefficients, what is the coefficient for nitrogen dioxide? I2(s) + HNO3(aq) → HIO3(aq) + NO2(g) + H2O(l)

Correct AnswerverifiedShow Answer

When the following redox equation is balanced with the smallest whole number coefficients, what is the coefficient of Sb3+(aq) ? BrO3-(aq) + Sb3+(aq) → Br-(aq) + Sb5+(aq) (acidic solution)

Correct AnswerverifiedShow Answer

Which is incorrect?

Correct AnswerverifiedShow Answer

Complete and balance the following redox equation. When properly balanced using the smallest whole-number coefficients, the coefficient of S is H2S + HNO3 → S + NO + H2O (acidic solution)

Correct AnswerverifiedShow Answer

What is E°cell for the following reaction? Al(s) + 3Ag+(aq) → Al3+(aq) + 3Ag(s)

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Consider the reaction CuO(s) + H2(g) → Cu(s) + H2O(l) In this reaction, which substances are the oxidizing agent and reducing agent, respectively?

Correct AnswerverifiedShow Answer

An electroplating solution is made up of nickel(II) sulfate. How much time would it take to deposit 0.500 g of metallic nickel on a custom car part using a current of 3.00 A?

Correct Answerverified9.13 min o...View AnswerShow Answer

What is the name given to the experimental apparatus for generating electricity through the use of a spontaneous redox reaction?

Correct AnswerverifiedShow Answer

What is the name of a galvanic cell that requires a continuous supply of reactants to keep functioning?

Correct AnswerverifiedShow Answer

Which metal is not capable of acting as a sacrificial anode when used with iron pipe?

Correct AnswerverifiedShow Answer

Consider the reaction of iodine with manganese dioxide. 3I2(s) + 2MnO2(s) + 8OH-(aq) 6I-(aq) + 2MnO4-(aq) + 4H2O(l) The equilibrium constant for the overall reaction is 8.3 × 10-7. What is E°cell for the reaction at 25°C? (R = 8.314 J/K • mol, F = 96,500 C • mol-1)

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What is E°cell for the reaction of nickel(II) ions with cadmium metal at 25°C? (R = 8.314 J/K • mol, F = 96,500 C • mol -1)

Correct AnswerverifiedShow Answer

Which is the Nernst equation?

Correct AnswerverifiedShow Answer

In a fuel cell, an external source of electrical power is used to drive a nonspontaneous reaction in which a fuel is produced.

Correct AnswerverifiedShow Answer

A lead-storage battery is not rechargeable.

Correct AnswerverifiedShow Answer

Predict the products obtained from the electrolysis of a 1 M AlBr3 solution.

Correct AnswerverifiedShow Answer

Which electrochemical cell pictured below corresponds to the following cell diagram? Cr(s) | Cr3+(aq, 1.0 M) || Sn2+(aq, 1.0 M) | Sn(s)

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A current of 250. A flows for 24.0 hours at an anode where the reaction occurring is as follows: Mn2+(aq) + 2H2O(l) → MnO2(s) + 4H+(aq) + 2e- What mass of MnO2 is deposited at this anode?

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A voltaic cell consists of a Mn/Mn²⁺ electrode (E° = -1.18 V) and a Fe/Fe²⁺ electrode (E° = -0.44 V) . Calculate [Fe²⁺] if [Mn²⁺] = 0.050 M and E_cell = 0.78 V at 25°C.

Correct Answer
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When the following redox equation is balanced with the smallest whole number coefficients, the coefficient for the hydrogen sulfate ion will be ________. Al(s) + HSO₄^-(aq) + OH^-(aq) → Al₂O₃(s) + S^2-(aq) + H₂O(l)

Correct Answer
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When the following redox equation is balanced with the smallest whole number coefficients, what is the coefficient for nitrogen dioxide? I₂(s) + HNO₃(aq) → HIO₃(aq) + NO₂(g) + H₂O(l)

Correct Answer
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When the following redox equation is balanced with the smallest whole number coefficients, what is the coefficient of Sb³⁺(aq) ? BrO₃^-(aq) + Sb³⁺(aq) → Br^-(aq) + Sb⁵⁺(aq) (acidic solution)

Correct Answer
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Correct Answer
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Complete and balance the following redox equation. When properly balanced using the smallest whole-number coefficients, the coefficient of S is H₂S + HNO₃→ S + NO + H₂O (acidic solution)

Correct Answer
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What is E°_cell for the following reaction? Al(s) + 3Ag⁺(aq) → Al³⁺(aq) + 3Ag(s)

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Consider the reaction CuO(s) + H₂(g) → Cu(s) + H₂O(l) In this reaction, which substances are the oxidizing agent and reducing agent, respectively?

Correct Answer
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Correct Answer
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9.13 min o...
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Correct Answer
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Correct Answer
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Consider the reaction of iodine with manganese dioxide. 3I₂(s) + 2MnO₂(s) + 8OH^-(aq) 6I^-(aq) + 2MnO₄^-(aq) + 4H₂O(l) The equilibrium constant for the overall reaction is 8.3 × 10^-7. What is E°_cell for the reaction at 25°C? (R = 8.314 J/K • mol, F = 96,500 C • mol^-1)

Correct Answer
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What is E°_cell for the reaction of nickel(II) ions with cadmium metal at 25°C? (R = 8.314 J/K • mol, F = 96,500 C • mol^-1)

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Correct Answer
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Correct Answer
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Correct Answer
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Predict the products obtained from the electrolysis of a 1 M AlBr₃ solution.

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Which electrochemical cell pictured below corresponds to the following cell diagram? Cr(s) | Cr³⁺(aq, 1.0 M) || Sn²⁺(aq, 1.0 M) | Sn(s)

Correct Answer
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A current of 250. A flows for 24.0 hours at an anode where the reaction occurring is as follows: Mn²⁺(aq) + 2H₂O(l) → MnO₂(s) + 4H⁺(aq) + 2e^- What mass of MnO₂ is deposited at this anode?

Correct Answer
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