Electrode Potentials and Gibbs Free Energy Change of the Overall Reaction

Electrode Potentials and Gibbs Free Energy Change of the Overall Reaction [Pg.461]

The equilibrium potential of an electrochemical reaction is defined as the potential of an electrode (with respect to the potential of a normal hydrogen electrode) when immersed in an electrolytic cell containing the reactive species, but without current flow. When a current is applied, the electrode potential is shifted. In the case of an anodic reaction [Pg.461]

The difference between the equilibrium potentials of the half-cell reactions El—El is related to the Gibbs free energy change AG of the overall cell reaction is [Pg.461]