Chapter 5, Problem 5.84E

Which of the following species is being oxidized in this redox reaction?

$\text{Zn}\left(\text{s}\right)+{\text{Cu}}^{2+}\left(\text{aq}\right)\to {\text{Zn}}^{2+}\left(\text{aq}\right)+\text{Cu}\left(\text{s}\right)$

a. $\text{Zn}\left(\text{s}\right)$

b. ${\text{Cu}}^{2+}\left(\text{aq}\right)$

c. ${\text{Zn}}^{2+}\left(\text{aq}\right)$

d. $\text{Cu}\left(\text{s}\right)$