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Redox potential definition
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Any oxidation-reduction (redox) reaction can be divided into two half reactions: one in which a chemical species undergoes oxidation and one in which another chemical species undergoes reduction. If a half-reaction is written as a reduction, the driving force is the reduction potential. If the half-reaction is written as oxidation, the driving force is the oxidation potential related to the reduction potential by a sign change. So the redox potential is the reduction/oxidation potential of a compound measured under standard conditions against a standard reference half-cell. In biological systems the standard redox potential is defined at pH = 7. 0versus the hydrogen electrode and partial pressure of hydrogen = 1 bar. See also electrode potential.

See also:
regioselectivity, regioselective definition
reduction reaction definition
Reflection high-energy electron diffraction (RHEED) definition
Random error definition
regulator definition
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