<P> In a galvanic cell, where a spontaneous redox reaction drives the cell to produce an electric potential, Gibbs free energy ΔG ° must be negative, in accordance with the following equation: </P> <Dl> <Dd> ΔG ° = − nFE ° </Dd> </Dl> <Dd> ΔG ° = − nFE ° </Dd> <P> where n is number of moles of electrons per mole of products and F is the Faraday constant, ~ 96485 C / mol . As such, the following rules apply: </P>

Difference between cell potential and standard cell potential