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exchange current

of an electrode reaction
The common value I 0 of the anodic and cathodic partial currents when the reaction is at equilibrium
I 0 = I a = − I c
For an electrode at equilibrium at which only one reaction is significant I = 0. When more than one reaction is significant at a given electrode, subscripts to I 0 may be used to distinguish exchange currents. I is not usually zero when only one of these reactions is at equilibrium.
PAC, 1974, 37, 499(Electrochemical nomenclature) on page 513
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IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8.
Last update: 2014-02-24; version: 2.3.3.
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