# Gibbs-Duhem equation

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## Gibbs-Duhem equation

[¦gibz ′dü·əm i‚kwā·zhən] (physical chemistry)

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,*n*_{i }the number of moles of the*i*th component, and μ_{i }is the chemical potential of the*i*th component. Also known as Duhem's equation.Want to thank TFD for its existence? Tell a friend about us, add a link to this page, or visit the webmaster's page for free fun content.

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