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potential at the point of zero charge (p.z.c.)

The value of the electric potential of an electrode at which one of the charges defined is zero. The reference electrode against which this is measured should always be clearly stated. The potential difference with respect to the potential of zero charge is defined by
E pzc = E − E σ = 0
where the potential at the point of zero charge is that for the given electrode in the absence of specific adsorption (other than that of the solvent).
Source:
PAC, 1974, 37, 499 (Electrochemical nomenclature) on page 509
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Cite as:
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: http://goldbook.iupac.org (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. doi:10.1351/goldbook.
Last update: 2014-02-24; version: 2.3.3.
DOI of this term: doi:10.1351/goldbook.P04775.
Original PDF version: http://www.iupac.org/goldbook/P04775.pdf. The PDF version is out of date and is provided for reference purposes only. For some entries, the PDF version may be unavailable.
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