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# Redox electrode

A redox electrode is an electrode made from electron-conductive material and characterized by high chemical stability in the solution under test. It is used for measuring the redox potential of a specific redox system in solution, and for electrochemical studies (investigation of electrochemical kinetics of interfacial processes).

The correlation of an electrode potential and redox system composition can be described by the Nernst equation:

Ox + ne- = Red
$E=E^0 + {RT \over nF}*\ln \left ({a_{\mathrm{ox}} \over a_\mathrm{red}}\right )$,

where

E0 - standard potential of a specific redox system,
R - gas constant,
T - temperature in kelvins,
n - number of electrons taking part in a specific redox reaction,