Title: membrane emf
Long Title: IUPAC Gold Book - membrane emf
DOI: 10.1351/goldbook.M03824
Status: current

Definition
The potential difference \(E_{\rm{m}}\) between two saturated $\ce{KCl}$ bridges inserted into two solutions separated by a membrane. The solutions need not be in equilibrium with one another and need not contain any colloidal material.

Related Terms
- colloidal: https://goldbook.iupac.org/terms/view/C01172
- membrane: https://goldbook.iupac.org/terms/view/MT06878

Source
- PAC, 1972, 31, 577. 'Manual of Symbols and Terminology for Physicochemical Quantities and Units, Appendix II: Definitions, Terminology and Symbols in Colloid and Surface Chemistry' on page 619 (https://doi.org/10.1351/pac197231040577)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/M03824/html
- json: https://goldbook.iupac.org/terms/view/M03824/json
- xml: https://goldbook.iupac.org/terms/view/M03824/xml

Citation: Citation: 'membrane emf' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.M03824
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Accessed: 2026-08-10T08:28:20+00:00