Vapor-liquid equilibrium of ternary aqueous poly (ethylene glycol) plus dipotassium tartrate at solutions at different temperatures

被引：3
作者：
Zafarani-Moattar, Mohammed Taghi [1 ]
Asadzadeh, Behnaz [1 ]
机构：
[1] Univ Tabriz, Dept Phys Chem, Tabriz, Iran
来源：
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY | 2015年 / 51卷
关键词：
Vapor-liquid equilibria; Water activity; Poly (ethylene glycol); Dipotassium tartrate; Wilson model; IMPROVED ISOPIESTIC METHOD; WATER ACTIVITIES; POLYETHYLENE-GLYCOL; BIPHASIC SYSTEMS; SALT; DENSITY; THERMODYNAMICS; REPRESENTATION; MULTICOMPONENT; BEHAVIOR;
D O I：
10.1016/j.calphad.2015.09.006
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In this study, water activities for the ternary systems of (dipotassium tartrate (K(2)Tar)+PEG4000+H2O) have been measured using an improved isopiestic method at T=(298.15,308.15, 318.15) K. From these measurements, values of the vapor pressure of solutions were also determined. The experimental data for the activity of water were accurately correlated with the Wilson model. Also, the performance of an empirical two parameter equation was also tested for representing the experimental water activity data. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：172 / 177
页数：6
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