Question

A standard galvanic cell is constructed with Sn2+ | Sn and H+ | H2 half cell compartments connected by a salt bridge. Which of the following statements are correct?

a. Sn2+ is reduced at the cathode.

b. In the external circuit, electrons flow from the H+|H2 compartment to the Sn2+|Sn compartment.

c. Sn is oxidized at the anode.

d. As the cell runs, anions will migrate from the H+|H2 compartment to the Sn2+|Sn compartment.

e. The anode compartment is the Sn2+|Sn compartment.

Answer 1

Sn or tin will undergo oxidation and become Sn2+ ion. Oxidation will take place at anode and reduction will take place at cathode. Electrons will flow from anode to cathode and the flow of current will be it's opposite direction.

So a is incorrect

B is incorrect

C is true statement

D also incorrect

E is right answer about anode

Sn is more reactive than hydrogen or the electrode potential of Sn is - 0.14 and for hydrogen it is 0. Therefore Sn will be the anode which will undergo oxidation by donating electrons toward hydrogen ion. H+ ion will undergo reduction by receiving that electrons.