ON WHICH PRINCIPLE?
Redox potential:
When an electrode is immersed in a solution containing a redox system, there is a continuous exchange of electrons between the substances in solution and the electrode. The latter finally takes on an equilibrium potential given by the Nernst equation:
E0: a constant characteristic of the redox system considered
R: ideal gas constant (8.3144621 J.mol-1.k-1)
T: temperature expressed in Kelvin
n: number of electrons involved in the reaction
F: Faraday constant (96485 C.mol-1 = 1 F)
aox and ared: ionic activities of the oxidizer and reductant in solution respectively
R: ideal gas constant (8.3144621 J.mol-1.k-1)
T: temperature expressed in Kelvin
n: number of electrons involved in the reaction
F: Faraday constant (96485 C.mol-1 = 1 F)
aox and ared: ionic activities of the oxidizer and reductant in solution respectively