Ecell and G

[Susanna Givan 2B]

What is the relationship between Ecell and G? Is there a similar relationship between Ecell and G naught?

[Faaizah Arshad 1H]

Delta G is the maximum amount of work that a cell can perform. At standard conditions, we can use the equation delta G(naught) = -n F E(naught) to see that when E naught is a positive value, then delta G naught is a negative value and the redox reaction is spontaneous so a galvanic cell is used. On the other hand, when E naught is a negative value, then delta G naught is a positive value and the redox reaction is nonspontaneous, and an electrolytic cell would be used.

It is clear from this equation that delta G naught depends on the number of moles of electrons transferred, Faraday's constant, and the E naught of a cell.