chemical potential, μB

https://doi.org/10.1351/goldbook.C01032
The chemical potential of a substance B in a mixture of substances B, C ... is related to the Gibbs energy G of the mixture by: μB=(∂G∂nB)T,p,nC≠B where T is the thermodynamic temperature, p is the pressure and nB, nC, ... are the amounts of substance of B, C, ... . For a pure substance B, the chemical potential μB∗ is given by: μB∗=G∗nB=Gm∗ where Gm∗ is the molar Gibbs energy, and where the superscript * attached to a symbol denotes the property of the pure substance. The superscript ⦵ or ∘ attached to a symbol may be used to denote a standard thermodynamic quantity.
See also: standard chemical potential
Sources:
Green Book, 2nd ed., p. 49 [Terms] [Book]
PAC, 1994, 66, 533. (Standard quantities in chemical thermodynamics. Fugacities, activities and equilibrium constants for pure and mixed phases (IUPAC Recommendations 1994)) on page 535 [Terms] [Paper]
PAC, 1996, 68, 957. (Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996)) on page 966 [Terms] [Paper]
Citation: 'chemical potential' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.C01032 RIS BibTex EndNote
Div. IDiv. VIIPDFTextXMLJSONQuantity