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Vapor‐liquid equilibrium. Part VI. Standard state fugacities for supercritical components
Author(s) -
Van Ness H. C.,
Abbott M. M.
Publication year - 1979
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690250411
Subject(s) - supercritical fluid , thermodynamics , chemistry , liquid phase , liquid state , thermodynamic equilibrium , phase equilibrium , vapor–liquid equilibrium , equilibrium constant , phase (matter) , physics , organic chemistry
A general treatment of fugacities of liquid mixtures yields the proper thermodynamic functions for dealing with nonidealities of liquid phases in equilibrium with vapor mixtures for systems containing supercritical components. The activity coefficients of the supercritical components may be based on standard state fugacities for the hypothetical pure liquids or on Henry's constants. A comparison of the rigorous thermodynamic equations which apply to the liquid phase for the two alternatives shows that they are equivalent.