Question 1

Which of the following best describes the function of a salt bridge in a galvanic cell?

Accepted Answer

It serves as a route through which ions can flow freely.

Question 2

In a galvanic cell, which electrode is the site of oxidation?

Accepted Answer

Anode

Question 3

Which of the following statements is TRUE for a galvanic cell, but FALSE for an electrolytic cell?

Accepted Answer

The flow of electrons is spontaneous.

Question 4

What is the balanced half-reaction that occurs at the anode in the overall cell reaction of a voltaic cell involving iron?

Accepted Answer

$$\mathrm{Fe} (s) \rightarrow \mathrm{Fe}^{2+} (aq) + 2e^-$$

Question 5

In an electrolytic cell, which electrode is the site of reduction?

Accepted Answer

Cathode

Question 6

Which of the following is a correct statement about the flow of electrons in a galvanic cell?

Accepted Answer

Electrons flow from the anode to the cathode.

Question 7

Which of the following is the overall cell reaction for a galvanic cell with zinc and copper electrodes?

Accepted Answer

$$\mathrm{Zn} (s) + \mathrm{Cu}^{2+} (aq) \rightarrow \mathrm{Zn}^{2+} (aq) + \mathrm{Cu} (s)$$

Question 8

Which of the following is NOT a characteristic of a galvanic cell?

Accepted Answer

It requires an external electrical energy source to operate.

Question 9

In a galvanic cell, what is the purpose of the voltmeter?

Accepted Answer

To measure the amount of electricity generated by the cell.

Question 10

Which of the following statements is TRUE about an electrolytic cell?

Accepted Answer

It consumes electrical energy to drive a nonspontaneous reaction.

Question 11

In a galvanic cell, which of the following ions would migrate through the salt bridge toward the cathode compartment?

Accepted Answer

Cations

Question 12

Which of the following best explains why a salt bridge is necessary in a galvanic cell?

Accepted Answer

It maintains electrical neutrality by allowing ions to move between compartments.

Question 13

Which of the following is the correct half-reaction for the reduction of copper ions at the cathode in a galvanic cell?

Accepted Answer

$$\mathrm{Cu}^{2+} (aq) + 2e^- \rightarrow \mathrm{Cu} (s)$$

Question 14

Which of the following statements is correct regarding the anode in an electrolytic cell?

Accepted Answer

It is positively charged.

Question 15

A student sets up a galvanic cell using zinc and copper electrodes. If the zinc electrode is placed in a solution of $$\mathrm{ZnSO}_4$$ and the copper electrode in $$\mathrm{CuSO}_4$$, which electrode will lose mass over time?

Accepted Answer

Zinc electrode

Question 16

Which of the following is a real-world application of an electrolytic cell?

Accepted Answer

Rechargeable lithium batteries

Question 17

In a galvanic cell, which process occurs at the cathode?

Accepted Answer

Reduction

Question 18

Which of the following best describes the energy conversion in a galvanic cell?

Accepted Answer

Chemical energy is converted to electrical energy.

Question 19

Which of the following statements is TRUE regarding the direction of electron flow in an electrolytic cell?

Accepted Answer

Electrons flow from the cathode to the anode.

Question 20

A patient receives a rechargeable lithium battery-powered pacemaker. Which type of electrochemical cell is primarily responsible for the battery's operation?

Accepted Answer

Electrolytic cell

Electrochemistry: Galvanic and Electrolytic Cells Study Notes

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