Question

A standard galvanic cell is constructed in which a Cu²⁺ | Cu⁺ half cell acts as the cathode. Which of the following statements are correct?

Hint: Refer to a table of standard reduction potentials.

(Choose all that apply.)

As the cell runs, anions will migrate from the Cu²⁺|Cu⁺ compartment to the other compartment.

Cu⁺ is oxidized at the cathode.

The anode compartment could be Ag⁺|Ag.

The anode reaction could be Fe -> Fe²⁺ + 2e^-.

In the external circuit, electrons flow from the Cu²⁺|Cu⁺ compartment to the other compartment.

Answer 1

a)

As the cell runs, anions will migrate from the Cu2+|Cu+ compartment to the other compartment. false, as it runs, positive charge is decreased, so we must decrease negative charge as well

Cu+ is oxidized at the cathode. false, oxidation is not carried in the cathode, but anode

The anode compartment could be Ag+|Ag. False, since Ag has highe rpotential than Cu2/cu+ pair.

The anode reaction could be Fe -> Fe2+ + 2e-.True, since it has lower reduction potential.

In the external circuit, electrons flow from the Cu2+|Cu+ compartment to the other compartment false, electrons flow from out into Cu2´to form Cu+