Chapter 4, Problem 44QAP

Classify each of the following half-reactions as oxidation or reduction.

(a) ${\text{CH}}_3\text{OH}\left(aq\right)\to {\text{CO}}_2\left(g\right)$

(b) ${\text{NO}}_3{}^{-}\left(aq\right)\to {\text{NH}}_4{}^{+}\left(aq\right)$

(c) ${\text{Fe}}^{3+}\left(aq\right)\to \text{Fe}\left(s\right)$

(d) ${\text{V}}^{2+}\left(aq\right)\to {\text{VO}}_3{}^{-}\left(aq\right)$