Gibbs-Duhem equation(redirected from Gibbs-Duhem relation)
Gibbs-Duhem equation[¦gibz ′dü·əm i‚kwā·zhən]
A relation that imposes a condition on the composition variation of the set of chemical potentials of a system of two or more components, where S is entropy, T absolute temperature, P pressure, ni the number of moles of the i th component, and μi is the chemical potential of the i th component. Also known as Duhem's equation.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.