Galvanic Cells

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Question 1 of 18

1. Question
The reaction below is considered a:

Fe → Fe²⁺ + 2e^–
- Oxidation reaction
- Reduction reaction
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Question 2 of 18

2. Question
The reaction below is considered a:

Sn²⁺ + 2e^–→ Sn
- Oxidation reaction
- Reduction reaction
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Question 3 of 18

3. Question
The following half-reaction occurs at an electrode in a galvanic cell

Zn → Zn²⁺ + 2e^–

This reaction is occurring at the:
- Anode
- Cathode
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Question 4 of 18

4. Question
The following half-reaction occurs at an electrode in a galvanic cell

Zn²⁺ + 2e^– → Zn

This reaction is occurring at the:
- Anode
- Cathode
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Question 5 of 18

5. Question
The following half-reaction occurs at an electrode in a galvanic cell

H → H⁺ + e^–

This reaction is occurring at the:
- Anode
- Cathode
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Question 6 of 18

6. Question
A galvanic cell is set up with a silver electrode and an iron electrode. If the silver electrode is reduced then the iron electrode would be called:
- The anode because the reduction occurs at the iron electrode
- The anode because the oxidation occurs at the iron electrode
- The cathode because the oxidation occurs at the iron electrode
- The cathode because the reduction occurs at the iron electrode
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Question 7 of 18

7. Question
A galvanic cell is set up with a gold electrode (Au/Au³⁺ E_red = +1.5 V) and a silver electrode (Ag/Ag⁺ E_red = +0.8 V). Which of the following is true?
- The silver electrode is the cathode and the electrons are flowing towards the silver electrode
- The silver electrode is the anode and the electrons are flowing towards the silver electrode
- The gold electrode is the anode and the electrons are flowing towards the gold electrode
- The gold electrode is the cathode and the electrons are flowing towards the gold electrode
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Question 8 of 18

8. Question
Which of the following reactions could occur at the cathode in a galvanic cell?
- Sn → Sn²⁺ + 2e^–
- Na⁺ + e^– → Na
- Ca → Ca²⁺ + 2e^–
- 2F^– → F₂ + 2e^–
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Question 9 of 18

9. Question
Which of the following oxidation number changes could occur at the anode?

I: 0 → +1
II: +2 → -1
III: +3 → +6
IV: -3 → -4
- I only
- I and II
- I and III
- II and IV
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Question 10 of 18

10. Question
A galvanic cell is setup with a Zn electrode and a Pb electrode and the following reaction occurs.

Zn_(s) + PbCl₂_(aq) → ZnCl₂_(aq) + Pb_(s)

In this galvanic cell what is the anode and what is the cathode?
- The Zn electrode is the anode and the Pb electrode is the cathode
- The Pb electrode is the anode and the Zn electrode is the cathode
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Question 11 of 18

11. Question
Which of the following is true about a galvanic cell?
- The reactions are spontaneous and consume voltage
- The reactions are non-spontaneous and produce voltage
- The reactions are spontaneous and produce voltage
- The reactions are non-spontaneous and consume voltage
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Question 12 of 18

12. Question
Which of the following is true about a galvanic cell?
- It has a -ΔG and +V
- It has a -ΔG and -V
- It has a +ΔG and +V
- It has a +ΔG and -V
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Question 13 of 18

13. Question
Which of the following demonstrates a galvanic cell?
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Question 14 of 18

14. Question
An electrochemical cell is set up as shown below.

Which of the following could be the ECell and Gibb’s free energy values of the cell?
- ΔG = 3kJ/mol and Ecell = 5.4 V
- ΔG = -3kJ/mol and Ecell = 5.4 V
- ΔG = -3kJ/mol and Ecell = -5.4 V
- ΔG = 3kJ/mol and Ecell = -5.4 V
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Question 15 of 18

15. Question
Half-Reaction Standard Reduction Potential (Volts)

I₂ + 2e^– → 2I^– +0.54

Au³⁺ + 3e^– → Au +1.54

K⁺ + e^– → K -2.93

Al³⁺ + 3e^– → Al -1.66

Pb²⁺ + 2e^– → Pb -0.12

Given the following standard reduction potentials, what is the ECell of a galvanic cell with the following half-reactions I₂/I and Pb²⁺/Pb cell?
- -0.66 V
- 0.42 V
- -0.42 V
- 0.66 V
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Question 16 of 18

16. Question
Half-Reaction Standard Reduction Potential (Volts)

I₂ + 2e^– → 2I^– +0.54

Au³⁺ + 3e^– → Au +1.54

K⁺ + e^– → K -2.93

Al³⁺ + 3e^– → Al -1.66

Pb²⁺ + 2e^– → Pb -0.12

Given the following standard reduction potentials, what is the ECell of a galvanic cell with the following half-reactions Au³⁺/Au and Pb²⁺/Pb cell?
- 1.66 V
- 1.42
- -1.42
- – 1.66 V
Correct

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Question 17 of 18

17. Question
Half-Reaction Standard Reduction Potential (Volts)

I₂ + 2e^– → 2I^– +0.54

Au³⁺ + 3e^– → Au +1.54

K⁺ + e^– → K -2.93

Al³⁺ + 3e^– → Al -1.66

Pb²⁺ + 2e^– → Pb -0.12

Given the following standard reduction potentials, what is the ECell of a galvanic cell with the following half-reactions Al³⁺/Al and K⁺/K cell?
- 0.98
- 1.27
- 4.59
- 3.45
Correct

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Question 18 of 18

18. Question
Half-Reaction Standard Reduction Potential (Volts)

I₂ + 2e^– → 2I^– +0.54

Au³⁺ + 3e^– → Au +1.54

K⁺ + e^– → K -2.93

Al³⁺ + 3e^– → Al -1.66

Pb²⁺ + 2e^– → Pb -0.12

Given the following standard reduction potentials, what is the ECell of a galvanic cell with the following half-reactions K⁺/K and Au³⁺/Au cell?
- 4.47
- 6.79
- 1.39
- 0.99
Correct

Incorrect

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Half-Reaction	Standard Reduction Potential (Volts)
I₂ + 2e^– → 2I^–	+0.54
Au³⁺ + 3e^– → Au	+1.54
K⁺ + e^– → K	-2.93
Al³⁺ + 3e^– → Al	-1.66
Pb²⁺ + 2e^– → Pb	-0.12

Half-Reaction	Standard Reduction Potential (Volts)
I₂ + 2e^– → 2I^–	+0.54
Au³⁺ + 3e^– → Au	+1.54
K⁺ + e^– → K	-2.93
Al³⁺ + 3e^– → Al	-1.66
Pb²⁺ + 2e^– → Pb	-0.12

Half-Reaction	Standard Reduction Potential (Volts)
I₂ + 2e^– → 2I^–	+0.54
Au³⁺ + 3e^– → Au	+1.54
K⁺ + e^– → K	-2.93
Al³⁺ + 3e^– → Al	-1.66
Pb²⁺ + 2e^– → Pb	-0.12

Half-Reaction	Standard Reduction Potential (Volts)
I₂ + 2e^– → 2I^–	+0.54
Au³⁺ + 3e^– → Au	+1.54
K⁺ + e^– → K	-2.93
Al³⁺ + 3e^– → Al	-1.66
Pb²⁺ + 2e^– → Pb	-0.12