The chemical potential of a substance
B in a mixture of substances
B,
C ... is related to the Gibbs energy
of the mixture by:
where
is the
thermodynamic temperature,
is the pressure and
,
, ... are the amounts of substance of
B,
C, ... . For a pure substance
B, the chemical potential
is given by:
where
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.
Source:
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
PAC, 1996, 68, 957
(Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations
1996))
on page 966
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.
)
