THERMODYNAMIC ANOMALIES IN NEAR-CRITICAL AQUEOUS NaCl SOLUTIONS

Apparent molar properties of near-critical aqueous NaCl solutions have been reported to show very large anomalies. We show that these anomalies are to be expected in any dilute solution of a nonvolatile in a near-critical solvent. Debye-Hückel effects need to be handled with some care; if inserted i...

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Bibliographic Details
Published in:Chemical engineering communications 1986-10, Vol.47 (4-6), p.315-328
Main Authors: LEVELT SENGERS, J. M. H., EVERHART, C. M., MORRISON, G., PITZER, KENNETH S.
Format: Article
Language:English
Subjects:
Apparent molar heat capacity
Apparent molar volume
Aqueous NaCl solutions
Chemical thermodynamics
Chemistry
Critical anomalies
Critical line
Debye-Hückel effects
Elements, mineral and organic compounds
Exact sciences and technology
General and physical chemistry
General. Theory
Metals and alloys
Mixtures
Thermodynamic properties
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Summary:Apparent molar properties of near-critical aqueous NaCl solutions have been reported to show very large anomalies. We show that these anomalies are to be expected in any dilute solution of a nonvolatile in a near-critical solvent. Debye-Hückel effects need to be handled with some care; if inserted in the Helmholtz free energy, they cause no more than a higher-order effect.
ISSN:0098-6445
1563-5201
DOI:10.1080/00986448608911770