Chapter 14, Problem 45QP

Balance the following half-reactions.

$\begin{array}{l}\left(\text{a}\right){\text{ Fe}}^{3+}\left(aq\right)\to \text{Fe}\left(s\right)\hfill \\ \left(\text{b}\right)\text{ Zn}\left(s\right)\to {\text{Zn}}^{2+}\left(aq\right)\hfill \\ \left(\text{c}\right){\text{ Cl}}^{-}\left(aq\right)\to {\text{C1}}_{\text{2}}\left(g\right)\hfill \\ \left(\text{d}\right){\text{ Fe}}^{2+}\left(aq\right)\to {\text{Fe}}^{3+}\left(aq\right)\hfill \end{array}$