https://doi.org/10.1351/goldbook.RT06783
Any @[email protected] (redox) reaction can be divided into two half-reactions: one in which a chemical species undergoes @[email protected] 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 @[email protected], the driving force is the @[email protected] potential related to the reduction potential by a sign change. So the redox potential is the reduction/@[email protected] potential of a compound measured under standards conditions against a standard reference half-cell. In biological systems the standard redox potential is defined at pH – 7.0 versus the hydrogen electrode and @[email protected] of hydrogen = 1 @[email protected]
See also:
electrode potential