Question 1

Which of the following best describes the primary function of a galvanic (voltaic) cell?

Accepted Answer

To generate electricity by converting chemical energy into electrical energy.

Question 2

In a galvanic cell, which component is responsible for allowing ions to flow between the two half-cells and maintaining electrical neutrality?

Accepted Answer

The salt bridge

Question 3

During the operation of a galvanic cell, which of the following statements is TRUE regarding the flow of electrons?

Accepted Answer

Electrons flow from the anode to the cathode through the external circuit.

Question 4

In a galvanic cell, which half-cell undergoes oxidation?

Accepted Answer

The anode

Question 5

Consider the following redox reaction in a galvanic cell: $$\mathrm{Mg (s) + Cu$$^{2+}$$ (aq) \rightarrow Mg$$^{2+}$$ (aq) + Cu (s)}. $$Which statement is correct?

Accepted Answer

Magnesium is oxidized and copper is reduced.

Question 6

A reduction reaction in a galvanic cell has an equilibrium constant of $$4.4 	imes 10$$^{8}$$. Which of the following is TRUE?

Accepted Answer

It has a negative $$\Delta G$$^{\circ}$$ and produces electricity.

Question 7

Which of the following statements is FALSE about a voltaic (galvanic) cell?

Accepted Answer

The cathode accumulates positive charge and the anode accumulates negative charge.

Question 8

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

Accepted Answer

To measure the amount of electricity generated by the cell.

Question 9

For the following redox reaction: $$\mathrm{Ni (s) + 2Ag$$^{+}$$ (aq) \rightarrow Ni$$^{2+}$$ (aq) + 2Ag (s)}$$, which statement is correct regarding the anode and cathode?

Accepted Answer

Nickel is the anode and silver is the cathode.

Question 10

In a galvanic cell, which of the following best describes the direction of cation flow in the salt bridge?

Accepted Answer

Cations flow from the anode compartment to the cathode compartment.

Question 11

Which of the following is TRUE about the cell potential ($$E^{\circ}$$_{cell}$$) of a spontaneous galvanic cell reaction?

Accepted Answer

$$E^{\circ}$$_{cell}$$ is positive.

Question 12

A student sets up a galvanic cell using zinc and copper electrodes. Which of the following correctly describes the electron flow?

Accepted Answer

Electrons flow from zinc to copper.

Question 13

Which of the following statements about the anode in a galvanic cell is correct?

Accepted Answer

The anode is where oxidation occurs.

Question 14

In a galvanic cell, what happens at the cathode?

Accepted Answer

Reduction occurs and electrons are gained.

Question 15

Which of the following is a correct statement about the salt bridge in a galvanic cell?

Accepted Answer

It prevents the buildup of charge by allowing ions to flow.

Question 16

A battery is an example of which type of electrochemical cell?

Accepted Answer

Galvanic (voltaic) cell

Question 17

Which of the following best explains why a galvanic cell can produce electricity?

Accepted Answer

Because a spontaneous redox reaction occurs, releasing energy.

Question 18

In a galvanic cell, which half-reaction occurs at the electrode with the more negative reduction potential?

Accepted Answer

Oxidation

Question 19

If a galvanic cell is constructed using sodium and gallium electrodes, and the reaction is $$\mathrm{Ga$$^{3+}$$ + 3Na \rightarrow Ga + 3Na$$^{+}$$}$$, how many electrons are transferred per formula unit?

Accepted Answer

3 electrons

Question 20

Which of the following is a correct description of the direction of electron flow in a galvanic cell?

Accepted Answer

Electrons flow from the anode to the cathode through the external wire.

Galvanic (Voltaic) Cells and Electrochemistry

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