diffusion potential

For an ideal dilute solution, $Δ Φ d$ is the integral of $∇ Φ$ (given by the following equation) across the boundary between two regions of different concentrations.

$∇ Φ = R T ∑ D i z i ∇ c i F ∑ s i 2 D i c i$

where $D i$ is the diffusion coefficient of species $i$ , $z i$ is the charge number of species $i$ , $c i$ is the concentration of species $i$ , $R$ is the gas constant, $T$ is the thermodynamic temperature, and $F$ is the Faraday constant.

Source:

PAC, 1981, 53, 1827 (Nomenclature for transport phenomena in electrolytic systems) on page 1838

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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.D01729.

Original PDF version: http://www.iupac.org/goldbook/D01729.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 The PDF version is out of date and is provided for reference purposes only.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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