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electrode potential

Answer» Electrode potential,\xa0E, in chemistry or\xa0electrochemistry, according to a\xa0IUPAC\xa0definition,[1]\xa0is the\xa0electromotive force\xa0of acell\xa0built of two\xa0electrodes:\ton the left-hand side is the\xa0standard hydrogen electrode, and\ton the right-hand side is the electrode the potential of which is being defined.By\xa0convention:
\t
ECell\xa0=\xa0ECathode\xa0−\xa0EAnode
From the above, for the cell with the\xa0standard hydrogen electrode\xa0(potential of 0 by convention), one obtains:
\t
ECell\xa0=\xa0ERight\xa0− 0 =\xa0EElectrode
The left-right convention is consistent with the international agreement that redox potentials be given for reactions written in the form of reduction half-reactions.Electrode potential is measured in\xa0volts\xa0(V).
Electrode potential is defined as the potential of a cell consisting of the electrode in question acting as a cathode and the standard hydrogen electrode acting as an anode. Reduction always takes place at the cathode, and oxidation at the anode.


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