For the reaction 2 Fe ^ 3 + ( aq ) + 2 I ^ - ( aq ) → 2 Fe ^ 2 + ( aq ) + I _ 2 ( s ) the magnitude of the standard molar free energy change, ∆ _ r G _ m ^ ∘ = - ______ kJ (Round off to the Nearest Integer).

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Standard electrode potential is a measurement of the potential for equilibrium. There is a potential difference between the electrode and the electrolyte called the potential of the electrode. When unity is the concentrations of all the species involved in a semi-cell, the electrode potential is known as the standard electrode potential.

For the reaction 2 Fe ^ 3 + ( aq ) + 2 I ^ - ( aq ) → 2 Fe ^ 2 + ( aq ) + I _ 2 ( s ) the magnitude of the standard

${E}_{1}^{0} + 2{E}_{2}^{0} = 3{E}_{3}^{0}$
${E}_{1}^{0} = 3{E}_{3}^{0} - 2{E}_{2}^{0}$

$= 3 ( - 0 . 036 ) - 2 ( - 0 . 44 )$
$= + 0 . 772V$
${E}_{\text{cell}}^{0} = {E}_{{Fe}^{3 +} / {Fe}^{2 +}}^{0} + {E}_{{I}^{-} / {I}_{2}}^{0} = 0 . 233$
${\Delta}_{r}{G}^{0} = - 2 \times 96 . 5 \times 0 . 233 = - 45kJ$

For the reaction 2 Fe ^ 3 + ( aq ) + 2 I ^ - ( aq ) → 2 Fe ^ 2 + (...

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