Article | REF: J1025 V3

Chemical-engineering thermodynamics: definitions and fundamental laws

Authors: Romain PRIVAT, Jean-Noël JAUBERT

Publication date: February 10, 2022

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4. Thermodynamic identities and fundamental relations

4.1 Divariant systems (uniform closed systems of constant composition)

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4.1.1 Degrees of freedom and Gibbs' phase rule

Consider a system in stable equilibrium. It is essential to know the minimum number of state quantities to be specified in order to fix the values of all the other state quantities.

To be concrete, let's suppose we have a first system containing one kilogram of oxygen at temperature T, pressure P, volume V and refractive index i R ...

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Thermodynamic identities and fundamental relations
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