Chapter 17, Problem 14E

Given the following cell notations, determine the species oxidized, species reduced, and the oxidizing agent and reducing agent, without writing the balanced reactions.

(a) $\text{Mg}\left(s\right)|{\text{Mg}}^{2+}\left(aq\right)\Vert {\text{Cu}}^{2+}\left(aq\right)|\text{Cu}\left(s\right)$

(b) $\text{Ni}\left(s\right)|{\text{Ni}}^{2+}\left(aq\right)\Vert {\text{Ag}}^{+}\left(aq\right)|\text{Ag}\left(s\right)$