For the cell reaction

$2\mathrm{F}{\mathrm{e}}^{3+}\left(\mathrm{a}\mathrm{q}\right)+2{\mathrm{I}}^{-}\left(\mathrm{a}\mathrm{q}\right)\to 2\mathrm{F}{\mathrm{e}}^{2+}\left(\mathrm{a}\mathrm{q}\right)+{\mathrm{I}}_2\left(\mathrm{a}\mathrm{q}\right)$

${\mathrm{E}}_{\mathrm{c}\mathrm{e}\mathrm{l}\mathrm{l}}^0=0.24\mathrm{V}$ at $298\mathrm{ }\mathrm{K}.$ The standard Gibbs energy $\left({\mathrm{\Delta }}_{\mathrm{r}}{\mathrm{G}}^{\mathrm{o}}\right)$ of the cell reaction is:

[Given that Faraday constant $\mathrm{F}=96500\mathrm{ }\mathrm{C}\mathrm{m}\mathrm{o}{\mathrm{l}}^{-1}$ ]