stoichiometric mean molal (practical activity coefficient)

in electrochemistry

The practical activity coefficient of electrolyte B is given by

$γ ± = a ± ν + ν + ν − ν − m B m +$

where $a ±$ is the mean activity of B in solution, $m B$ is the molality of B, $m + = 1 mol kg −1$ , $ν +$ is the number of cations and $ν −$ the number of anions in the chosen group B which is taken as the electrolyte.

$ν = ν + + ν −$

Source:

PAC, 1974, 37, 499 (Electrochemical nomenclature) on page 510

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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. https://doi.org/10.1351/goldbook.

Last update: 2014-02-24; version: 2.3.3.

DOI of this term: https://doi.org/10.1351/goldbook.S06024.

Original PDF version: http://www.iupac.org/goldbook/S06024.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 The PDF version is out of date and is provided for reference purposes only.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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