For the following cell, \[ \mathrm{Zn}(s)\left|\mathrm{ZnSO}_{4}(a q) \| \mathrm{CuSO}_{4}(a q)\right| \mathrm{Cu}(s) \] when the concentration of $\mathrm{Zn}^{2+}$ is 10 times the concentration of $\mathrm{Cu}^{2+}$, the expression for $\Delta G\left(\right.$ in $\left.\mathrm{J} \mathrm{mol}^{-1}\right)$ is [ $\mathrm{F}$ is Faraday constant; $\mathrm{R}$ is gas constant; $\mathrm{T}$ is temperature; $E^{o}($ cell $)=1.1 \mathrm{~V}$ ]