A voltaic cell is constructed that uses the following reaction and operates at $298$ K$.$

Zn$($s$)+$ Ni$2+($aq$)$ Zn$2+($aq$)+$ Ni$($s$)$

$($a$)$ What is the emf of this cell under standard conditions?

V

$($b$)$ What is the emf of this cell when $[$Ni$2+]=3\mathrm{.}70$ M and $[$Zn$2+]=0\mathrm{.}112$ M$?$

V

$($c$)$ What is the emf of the cell when $[$Ni$2+]=0\mathrm{.}105$ M and $[$Zn$2+]=0\mathrm{.}882$ M$?$

V