Chapter 17, Problem 17RORR

Specify which of the following equations represent oxidation reduction reactions, and indicate the oxidizing agent, the reducing agent, the species being oxidized, and the species being reduced.

a. ${\text{CH}}_{\text{4}}\left(g\right)+{\text{H}}_{\text{2}}\text{O}\left(g\right)\to \text{CO}\left(g\right)+{\text{3H}}_{\text{2}}\left(g\right)$

b. ${\text{2AgNO}}_{\text{3}}\left(aq\right)+\text{Cu}\left(s\right)\to {\text{Cu(NO}}_{\text{3}}{\text{)}}_{\text{2}}\left(aq\right)+\text{2Ag}\left(s\right)$

c. $\text{Zn}\left(s\right)+\text{2HCl}\left(aq\right)\to {\text{ZnCl}}_{\text{2}}\left(aq\right)+{\text{H}}_{\text{2}}\left(g\right)$

d. ${\text{2H}}^{\text{+}}(aq)+{\text{2CrO}}_{\text{4}}{}^{\text{2-}}(aq)\to {\text{Cr}}_{\text{2}}{\text{O}}_{\text{7}}{}^{\text{2-}}(aq)+{\text{H}}_{\text{2}}\text{O}(l)$