Chapter 16, Problem 65E

Use the half-reaction method to balance each redox reaction occurring in acidic aqueous solution.

a. ${\text{PbO}}_{\text{2}}(s)+{\text{I}}^{-}(aq)\to {\text{Pb}}^{\text{2+}}(aq)+{\text{I}}_{\text{2}}(s)$

b. ${\text{SO}}_3^{2-}(aq)+{\text{MnO}}_4^{-}(aq)\to {\text{SO}}_4^{2-}(aq)+{\text{Mn}}^{2+}(aq)$

c. ${\text{S}}_2{\text{O}}_3^{2-}(aq)+{\text{Cl}}_{\text{2}}(g)\to {\text{SO}}_4^{2-}(aq)+{\text{Cl}}^{-}(aq)$