Textbook Problem

Combine the following half-reactions to produce a balanced redox equation: ${\text{Sn}}^{2+}\text{(aq)}\to {\text{Sn}}^{\text{4+}}(\text{aq})+2{\text{e}}^{-}$ and $\text{AgCl(s)}+{\text{e}}^{-}\to \text{Ag(s)}+{\text{Cl}}^{-}(\text{aq)}$. Indicate which half reaction is an oxidation reaction and which is a reduction.