Chapter 16, Problem 62E

BALANCING REDOX REACTIONS

Balance each redox reaction using the half-reaction method.

$\begin{array}{l}(a)\text{Al}\left(s\right)+{\text{Zn}}^{2+}\left(aq\right)\to {\text{Al}}^{3+}\left(aq\right)+\text{Zn}\left(s\right)\hfill \\ (b)\text{Cu}\left(s\right)+{\text{Au}}^{3+}\left(aq\right)\to {\text{Cu}}^{2+}\left(aq\right)+\text{Au}\left(s\right)\hfill \\ (c){\text{Hg}}^{2+}\left(aq\right)+{\text{Sn}}^{2+}\left(aq\right)\to {\text{Hg}}_2{}^{2+}\left(aq\right)+{\text{Sn}}^{4+}\left(aq\right)\hfill \end{array}$