Gibbs-Duhem relation
The Gibbs-Duhem relation is given by
or
where is the pressure, is the entropy, is the volume, Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \mu} is the chemical potential and is the number density.