ΔG°=ΔH°−TΔS° ...(i) where, ∆G° = standard Gibb’s free energy change ∆H° = standard change in enthalpy ∆S° = standard entropy change Also, ΔG°=−nFE° where, n = number of electrons F = Faraday constant E° = standard cell potential ∴ Equation (i) is, −nFE°=ΔH°−TΔS° −nFE°−ΔH°=TΔS° ⇒ΔS°=