Electrode Kinetics

The general half-reaction expression for the oxidation of a reactant is:

where reactant "Red" loses electrons and becomes "Ox," the product of oxidation, and n is the number of electrons that are transferred in the reaction.

For the opposite direction, "Ox" gains electrons, undergoing reduction to form "Red" in the half-reaction

The tabulated standard reduction potentials reflect the potential produced in going in this direction, most likely because it is the direction for spontaneous chemical reactions.

On an electrode at equilibrium conditions, both processes occur at equal rates and the currents produced by the two reactions balance each other, giving no net current from the electrode

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