For the given cell; Cu(s) | Cu ^ 2 + ( C _ 1 M) || Cu ^ 2 + ( C _ 2...

For concentration cell $Ecell\mathop{o}_{¯} = 0$

Anode : $Cu\left(s\right) \to {Cu}^{2 +}\left(aq\right)A$

Cathode : ${Cu}^{2 +}\left(aq\right)c \to Cu\left(s\right)$

Overall : $\overset{¯}{{Cu}^{2 +}\left(aq\right)c \to {Cu}^{2 +}\left(aq\right)}A$

As $\Delta G = - nF{E}_{cell}$

If $\Delta G = - ve$ then ${E}_{cell}$ is positive.

${E}_{cell} = Ecell\mathop{o}_{¯} - \dfrac{0 .059}{2}log\dfrac{{C}_{1}}{C2}$

${E}_{cell} = \dfrac{- 0 .059}{2}log\dfrac{{C}_{1}}{C2}$

${E}_{cell} > 0$

$⇒$ ${C}_{2} > {C}_{1}$