Question

Part A.

The half-cell is a chamber in the voltaic cell where one half-cell is the site of the oxidation reaction and the other half-cell is the site of the reduction reaction.

Type the half-cell reaction that takes place at the anode for the iron-silver voltaic cell. Indicate the physical states of atoms and ions using the abbreviation (s), (l), or (g) for solid, liquid, or gas, respectively. Use (aq) for an aqueous solution. Do not include phases for electrons.

Part B.

The half-cell is a chamber in the voltaic cell where one half-cell is the site of an oxidation reaction and the other half-cell is the site of a reduction reaction.

Type the half-cell reaction that takes place at the cathode for the iron-silver voltaic cell. Indicate the physical states of atoms and ions using the abbreviation (s), (l), or (g) for solid, liquid, or gas, respectively. Use (aq) for an aqueous solution. Do not include phases for electrons.

Answer 1

In Iron-Silver volt voltaic cell, iron acts as an anode and silver act as a cathode. The half cell carries out oxidation reaction is known as the anode chamber whereas the other half-reaction which carries reduction reaction is known as cathode chamber. In this voltaic cell, Iron gets oxidized to soluble Fe³⁺ ions, hence it acts as an anode and silver Ag⁺ ions get spontaneously reduced to solid silver, hence it acts as a cathode.

Part A

Half reaction at the anode: Fe(s) Fe³⁺ (aq) + 3e^-

Part B

Half reaction at the cathode: Ag⁺(aq) + e^-   Ag(s)

The net cell reaction for Iron-Silver voltaic cell is

3Ag⁺(aq) + Fe(s) Fe³⁺(aq) + 3Ag(s)