Chapter 18, Problem 12SAQ

Which reaction could used to generate electricity in voltaic electrochemical cell?
a. ${\text{Pb}}^{\text{2}+}\left(aq\right)+\text{Mg}\left(s\right)\to {\text{Mg}}^{\text{2}+}\left(aq\right)+\text{Pb}\left(s\right)$

b. ${\text{Zu}}^{\text{2}+}\left(aq\right)+\text{Sn}\left(s\right)\to {\text{Sn}}^{\text{2}+}\left(aq\right)+\text{Zn}\left(s\right)$

c. $\text{NaCl }\left(aq\right)+{\text{AgNO}}_{\text{3}}\left(aq\right)\to \text{AgC1}\left(s\right)+{\text{NaNO}}_{\text{3}}\left(aq\right)$

d. None of the above