Reduction potential of Iron electrode in contact with 0.01M ${\mathrm{FeSO}}_4$ solution is $\left[{\mathrm{E}}_{{\mathrm{Fe}}^{+2}/\mathrm{Fe}}^{\mathrm{o}}=-0.44\mathrm{V}\right]$

$$\begin{gathered} {\mathrm{E}}_{{\mathrm{Fe}}^{+2}/\mathrm{Fe}}\mathrm{\hspace{0.17em}}=\mathrm{\hspace{0.17em}}{\mathrm{E}}_{{\mathrm{Fe}}^{2+}/\mathrm{Fe}}^{\mathrm{o}}+\mathrm{\hspace{0.17em}}\frac{0.0591}{2}\log \left[{\mathrm{Fe}}^{+2}\right]; \\ {\mathrm{E}}_{{\mathrm{Fe}}^{+2}/\mathrm{Fe}}\mathrm{\hspace{0.17em}}=\mathrm{\hspace{0.17em}} -0.44 \mathrm{V}+\mathrm{\hspace{0.17em}}\frac{0.0591}{2}\log \left({10}^{-2}\right) ; \\ {\mathrm{E}}_{{\mathrm{Fe}}^{+2}/\mathrm{Fe}}\mathrm{\hspace{0.17em}}=\mathrm{\hspace{0.17em}} -0.50 \mathrm{V}; \end{gathered}$$