Consider the following galvanic cell.
-What is the balanced equation for the cell reaction?

Question

Consider the following galvanic cell. 
-What is the balanced equation for the cell reaction?

Quizplus · Accepted Answer

The half-reactions can be determined by looking at the oxidation states of the reactants and products. Fe goes from 0 to +2, while Sn goes from 0 to +2. The balanced half-reactions are:

Fe(s) → Fe2+(aq) + 2e-
Sn(s) + 2e- → Sn2+(aq)

To make these half-reactions into a cell reaction, reverse the bottom half-reaction and add the two half-reactions together:

Fe(s) + Sn2+(aq) → Fe2+(aq) + Sn(s)

This matches choice C.

Consider the Following Galvanic Cell