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Correlation and prediction of ternary Excess Enthalpy Data

Autor(es) y otros:
Pando García-Pumarino, ConcepciónAutoridad Uniovi; Rodríguez Renuncio, Juan AntonioAutoridad Uniovi; García Calzón, Josefa ÁngelaAutoridad Uniovi; Christensen, James J.; Izatt, Reed M.
Palabra(s) clave:

Ternary Excess Enthalpies

Prediction of Ternary Excess Enthalpies

Correlation of Ternary Excess Enthalpies

Fecha de publicación:
1987
Editorial:

Plenum Publishing Corporation

Versión del editor:
http://dx.doi.org/10.1007/BF00646331
Citación:
Journal of Solution Chemistry, 16(7), p. 503-527 (1987); doi:10.1007/BF00646331
Descripción física:
503-527
Resumen:

Methods for predicting ternary excess enthalpies from excess enthalpy data for the three binary mixtures involved are examined and tested for forty-two sets of ternary data. In order to study the relation between the performance of the methods and the characteristics of the components in the mixture, the sets of data were classified into four groups according to the chemical nature of their components. The asymmetric equations proposed by Scatchard, Toop, and Hillert are shown to provide accurate predictions. The ratio of the standard deviations between experimental and predicted excess enthalpies and the maximum absolute value of this magnitude is 0.05 or less for most of the systems. These equations are asymmetric with respect to the numbering of components. A rule is given for selecting which component is to be designated as component 1 for systems showing endothermic mixing, exothermic mixing, or a combination of endothermic and exothermic mixing. Correlation methods are also examined and a partial differential approximant is proposed to represent the ternary contribution to the excess enthalpy

Methods for predicting ternary excess enthalpies from excess enthalpy data for the three binary mixtures involved are examined and tested for forty-two sets of ternary data. In order to study the relation between the performance of the methods and the characteristics of the components in the mixture, the sets of data were classified into four groups according to the chemical nature of their components. The asymmetric equations proposed by Scatchard, Toop, and Hillert are shown to provide accurate predictions. The ratio of the standard deviations between experimental and predicted excess enthalpies and the maximum absolute value of this magnitude is 0.05 or less for most of the systems. These equations are asymmetric with respect to the numbering of components. A rule is given for selecting which component is to be designated as component 1 for systems showing endothermic mixing, exothermic mixing, or a combination of endothermic and exothermic mixing. Correlation methods are also examined and a partial differential approximant is proposed to represent the ternary contribution to the excess enthalpy

URI:
http://link.springer.com/journal/10953/16/7/page/1#page-1
http://hdl.handle.net/10651/6841
ISSN:
0095-9782; 1572-8927
DOI:
10.1007/BF00646331
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