Question

Standard Gibbs energy change is zero for a redox reaction. The K${}_c$ for the reaction would be:

Answer 1

For a redox reaction, $\Delta G^o=0$

But $\Delta G^0=-RTlnK$

Hence, $-RTlnK=0$

$lnK=0$

$K=1$.

Hence, the equilibrium constant for the reaction has value 1.