The equilibrium constant for the reaction $\mathrm{Zn}(\mathrm{s})+\mathrm{Sn}^{2+}(\mathrm{aq}) \rightleftharpoons \mathrm{Zn}^{2+}(\mathrm{aq})+\mathrm{Sn}(\mathrm{s})$ is $1 \times 10^{20}$ at 298 K . The magnitude of standard electrode potential of $\mathrm{Sn} / \mathrm{Sn}^{2+}$ if $\mathrm{E}_{\mathrm{Zn}^{2+} / \mathrm{Zn}^{\circ}}^*=-0.76 \mathrm{~V}$ is $\_\_\_\_$ $\times 10^{-2} \mathrm{~V}$. (Nearest integer) Glven: $\frac{2.303 \mathrm{RT}}{\mathrm{F}}=0.059 \mathrm{~V}$