Premium
Estimation of the liquid‐phase enthalpy of mixing for the binary mixture 1,3 dioxolane‐water
Author(s) -
Castellari Carlo,
Francesconi Romolo,
Bubani Bianca,
Comelli Fabio
Publication year - 1983
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.5450610217
Subject(s) - non random two liquid model , thermodynamics , enthalpy , isobaric process , binary number , chemistry , mixing (physics) , dioxolane , activity coefficient , physics , mathematics , organic chemistry , arithmetic , quantum mechanics , aqueous solution
The liquid‐phase enthalpy of mixing δ H m of the binary system 1,3 dioxolane‐water was calculated from existing isobaric liquid‐vapor equilibrium data. The liquid‐vapor data were correlated by the equations of Margules (with three parameters), Redlich‐Kister (with four and five parameters), Wilson, NRTL and LEMF in order to obtain the unknown parameters. From the corresponding analytical expressions for G E the values of δ H m were calculated and compared with reported experimental values. Only the Redlich‐Kister expressions provided calculated δ H m curves showing the inversion of sign typical of the experimental curves, whereas the Wilson expression gave the best agreement between the calculated and the experimental values of the heat of mixing. On a calculé l'enthalpie de mélange en phase liquide δ H m du système binaire, 1,3 dioxolane‐eau, à partir des données isobares d'équilibre liquide‐vapeur.