Change in Gibbs free energy (given number of electrons per mole product,Faraday constant and electrode potential)
change in Gibbs free energy
number of electrons per mole product
Faraday constant (coulombs per mole)
electrode potential of the reaction
Gibbs energy is the chemical potential that is minimized when a system reaches equilibrium at constant pressure and temperature. Its derivative with respect to the reaction coordinate of the system vanishes at the equilibrium point. As such, it is a convenient criterion of spontaneity for processes with constant pressure and temperature.