Chapter 4, Problem 39E

Balance each of the following equations according to the half-reaction method:

(a) ${\text{Sn}}^{2+}\left(aq\right)+{\text{Cu}}^{2+}\left(aq\right)\to {\text{S}}^{4+}\left(aq\right)+{\text{Cu}}^{+}\left(aq\right)$

(b) ${\text{H}}_2\text{S}\left(g\right)+{\text{Hg}}_2{}^{2+}\left(aq\right)\to \text{H}g\left(l\right)+\text{S}\left(s\right)\left(\text{in acid}\right)$

(c) ${\text{CN}}^{-}\left(aq\right)+{\text{ClO}}_2\left(aq\right)\to {\text{CNO}}^{-}\left(aq\right)+{\text{Cl}}^{-}\left(aq\right)\left(\text{in acid}\right)$

(d) ${\text{Fe}}^{2+}\left(aq\right)+{\text{Ce}}^{4+}\left(aq\right)\to {\text{Fe}}^{3+}\left(aq\right)+{\text{Ce}}^{3+}\left(aq\right)$

(e) $\text{HBrO}\left(aq\right)\to {\text{Br}}^{-}\left(aq\right)+{\text{O}}_2\left(g\right)\left(\text{in acid}\right)$