THERMODYNAMICS AND STATISTICAL MECHANICS OF DILUTE BINARY MIXTURES.

Pablo G. Debenedetti, Sanat K. Kumar

Research output: Contribution to conferencePaper

Abstract

The asymptotic laws which govern the behavior of solute and solvent fugacity coefficients in a dilute binary mixture are rephrased in fluctuation-explicit form. Solute-solvent fluctuation covariances are shown to be equivalent, in the infinite dilution limit, to the concept of a cluster, which acquires mechanistic significance in the case of binary mixtures of non-volatile solutes in supercritical fluids. Infinite dilution solute partial molar volume measurements in binary mixtures are shown to be equivalent to cluster size determinations. Experimental evidence for a multivalued relationship between cluster size and compressibility is presented and interpreted in the light of fluctuation theory.

Original languageEnglish (US)
StatePublished - Dec 1 1986

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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