# An oxidation-reduction reaction in which 3 electrons are transferred

Question:

An oxidation-reduction reaction in which 3 electrons are transferred has a $\Delta \mathrm{G}^{0}$ of $17.37 \mathrm{~kJ} \mathrm{~mol}^{-1}$ at $25^{\circ} \mathrm{C}$. The value of $\mathrm{E}_{\text {cell }}^{0}$ (in $\mathrm{V}$ ) is___________. $\times 10^{-2}$.$\left(1 \mathrm{~F}=96,500 \mathrm{C} \mathrm{mol}^{-1}\right)$

Solution:

(-6)

$\Delta G^{\circ}=-n F E_{\text {cell }}^{\circ}$

$17.37 \times 10^{3}=-3 \times 96500 \times E_{\text {cell }}^{\mathrm{o}}$

$E_{\text {cell }}^{o}=-0.06 \mathrm{~V} \simeq-6.0 \times 10^{-2} \mathrm{~V}$