Chapter 7, Problem 7.95AQAP

Identify each of the following as an oxidation or a reduction: (7.6)

1. ${\text{Zn}}^{2+}\left(\text{aq}\right)+2e^{-}\to \text{Zn}\left(s\right)$
2. $\text{Al}\left(s\right)\to {\text{Al}}^{3+}\left(aq\right)+3{\text{ e}}^{-}$
3. $\text{Pb}\left(s\right)\to {\text{Pb}}^{2+}\left(aq\right)+2{\text{ e}}^{-}$
4. ${\text{Cl}}_2\left(g\right)+2{\text{e}}^{-}\to 2{\text{Cl}}^{-}\left(aq\right)$