Now in terms of electrochemical sounds, we're going to say that Gibbs free energy, which we're going to say here is a ΔG° so we're talking about standard Gibbs free energy represents the maximum or Max electrical work that can be created. Now here the connections between spontaneity, Gibbs free energy and standard cell potential are illustrated by the formula.
So here we're going to say that our standard Gibbs free energy equals -n * F * E°cell. Here standard Gibbs free energy is usually in units of kilojoules. n represents the moles of electrons transferred. So remember within a redox reaction, one species is oxidized, meaning it donated to electrons to another species, which is reduced. So we're talking about the number of electrons transferred from one species to another.
Now we're going to say your F is known as Faraday's constant. Here it's in units of 96,485 coulombs per one mole of electrons. And then here we're going to say that E°cell. Remember this represents our standard cell potential and here it's in units of volts which will represent by capital V. So here this equation is how we can connect Gibbs free energy, standard Gibbs free energy and our standard self potential.