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Precise testing of binary vapour—liquid equilibrium data by the Gibbs—Duhem equation

✍ Scribed by H.C. Van Ness


Publisher
Elsevier Science
Year
1959
Tongue
English
Weight
572 KB
Volume
11
Category
Article
ISSN
0009-2509

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✦ Synopsis


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 temperature, are then developed. Application of the " composition-resolution " test is fully discussed, and its advantages are demonstrated. R&urn&Les methodes g&&ales de verification des don&es thermodynamiques pour des solutions binaires par l'dquation de Gibbs-Duhem ont et6 resumees et une verification nouvelle " composition-resolution " a Cte proposee. Les auteurs ont developpe des methodes thermodynamiquement exactes du controle des don&es d'equilibre d'un binaire vapeur liquide a pression con&ante et aussi a temperature con&ante. L'application de la verification compositionresolution est completement discutee et ses avantages sont demontres. Zusammenfassnng-Die allgemeinen Methoden zur Priifung thermodynamischer Daten fiir binare Liisungen durch die GibbsDuhem Gleichung werden kurx mitgeteilt und eine neue Zerlegungsmethode vorgeschlagen. Ferner werden thermodynamisch exakte Methoden zur Priifung der biniiren Gleichgewichtsdaten dampffijrmiglhissig, und zwar sowohl fiir konstanten Druck wie fur konstante Temperatur entwickelt. Die Anwendung der Zerlegungsmethode wird ausfiihrlich mitgeteilt und ihre Vorteile aufgezeigt.


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An accurate method for testing the therm
✍ R. Techo 📂 Article 📅 1963 🏛 Elsevier Science 🌐 English ⚖ 583 KB

This paper presents a method for using electronic digital computers to determine the thermodynamic consistency of isothermal binary vapour-liquid equilibrium data. Two sets of orthogonal polynomials, P = P(x) and y = y(x), are obtained by fitting the experimental total pressure and vapour-compositio