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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2. Calculating a partial molar quantity from a total molar quantity

2.1 Differentiation of functions of several variables: useful relationships in thermodynamics

If f is a function of variables (x 1 , x 2 , ..., x n ) then the total differential df is written :

df=(fx1)x2,x3,...,xndx1+(fx2)x1,x3,...,xndx2+...
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Calculating a partial molar quantity from a total molar quantity
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