Solute-solute correlations in infinitely dilute supercritical mixtures

Pablo G. Debenedetti; Ariel A. Chialvo

doi:10.1063/1.463596

Solute-solute correlations in infinitely dilute supercritical mixtures

Pablo G. Debenedetti, Ariel A. Chialvo

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28 Scopus citations

Abstract

Asymptotic expressions for the solute-solute pair correlation integral and for the limiting slope of the composition dependence of the solute's activity coefficient are derived for the situation in which the solvent's critical point is approached while the mixture is kept at infinite dilution. Both quantities diverge to plus infinity and scale as the solvent's compressibility, with prefactors that depend on the temperature, solvent density, and the infinite dilution limit of the solute-solvent direct correlation function integral.

Original language	English (US)
Pages (from-to)	504-507
Number of pages	4
Journal	The Journal of chemical physics
Volume	97
Issue number	1
DOIs	https://doi.org/10.1063/1.463596
State	Published - 1992

All Science Journal Classification (ASJC) codes

General Physics and Astronomy
Physical and Theoretical Chemistry

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10.1063/1.463596

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title = "Solute-solute correlations in infinitely dilute supercritical mixtures",

abstract = "Asymptotic expressions for the solute-solute pair correlation integral and for the limiting slope of the composition dependence of the solute's activity coefficient are derived for the situation in which the solvent's critical point is approached while the mixture is kept at infinite dilution. Both quantities diverge to plus infinity and scale as the solvent's compressibility, with prefactors that depend on the temperature, solvent density, and the infinite dilution limit of the solute-solvent direct correlation function integral.",

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AB - Asymptotic expressions for the solute-solute pair correlation integral and for the limiting slope of the composition dependence of the solute's activity coefficient are derived for the situation in which the solvent's critical point is approached while the mixture is kept at infinite dilution. Both quantities diverge to plus infinity and scale as the solvent's compressibility, with prefactors that depend on the temperature, solvent density, and the infinite dilution limit of the solute-solvent direct correlation function integral.

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Solute-solute correlations in infinitely dilute supercritical mixtures

Abstract

All Science Journal Classification (ASJC) codes

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