The exact forms of the Gibbs-Duhem equation in terms of fugacities and activity coefficients, applicable to any multicomponent phase, are developed in a straightforward manner. Reduction to restricted equations valid for constant temperature, constant pressure, or constant composition becomes a simp
Application of Gibbs-Duhem equations to ternary systems
β Scribed by R Schuhmann Jr.
- Publisher
- Elsevier Science
- Year
- 1955
- Weight
- 1018 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0001-6160
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π SIMILAR VOLUMES
Rules are given which should assist in the use of the equation dy y(l-Y) IdP \_=---[ 1 dx (y-x) Pdx for predicting vapour compositions from total pressure data. A discussion is also given of the values of dy dx at the terminal points of the composition range and at the azeotropic point.
The general methods of testing thermodynamic data for binary solutions by the Gibbs-Duhem equation are briefly reviewed, and a new "composition-resolution " test is proposed. Thermodynamically exact methods of testing binary vapour-liquid equilibrium data, both for constant pressure and for constant