The standard $EMF$ of a galvanic cell involving cell reaction with $n = 2$ is found to be $0.295\, V$ at $25^\circ C. $ th $n = 2$ is found to be $0.295\, V$ at $25^{\circ}C$. The equilibrium constant of the reaction would be (Given $F = 96500\, C\, mol^{-1}, $
$ R=8.314 \, JK^{-1}mol^{-1}) $