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Salt effects in liquid‐vapor equilibrium: A new equation for the ethanol‐water system saturated with salt
Author(s) -
Jaques D.,
Furter W. F.
Publication year - 1972
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450500410
Subject(s) - isobaric process , vapor–liquid equilibrium , thermodynamics , chemistry , salt (chemistry) , saturation (graph theory) , ethanol , phase equilibrium , surface tension , phase (matter) , chromatography , organic chemistry , physics , mathematics , combinatorics
A new equation for salt effect in vapor‐liquid equilibrium is presented, which correlates temperature and the liquid‐phase concentrations of all three components with equilibrium vapor composition, for isobaric systems consisting of a binary to which • salt has been added to saturation. The equation, of form\documentclass{article}\pagestyle{empty}\begin{document}$$ \frac{{\Delta \mu ^E }}{z} = C_1 + C_2 x + C_3 z + C_4 x^2 + C_5 xz + C_6 z^2 $$\end{document}was tested successfully with literature data for 12 ethanol‐water‐salt systems, yielding a better fit for all 12 systems than the one‐constant equation of Johnson and Furter, and with the confidence level for the comparison in excess of 99.9% for six of thesystems tested.