Vapor pressures, osmotic and activity coefficients of electrolytes in protic solvents at different temperatures. 2. Lithium bromide in ethanol

被引:27
|
作者
Nasirzadeh, K [1 ]
Neueder, R
Kunz, W
机构
[1] Univ Regensburg, Inst Phys & Theoret Chem, D-93040 Regensburg, Germany
[2] Azarbaijan Univ Tarbiat Moallem, Dept Chem, Tabriz, Iran
关键词
vapor pressure; osmotic coefficient; activity coefficient; Pitzer model; MSA-NRTL model; chemical model; ethanol; lithium bromide;
D O I
10.1007/s10953-004-1057-9
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Precise vapor pressure data for LiBr solutions in ethanol are given for temperatures ranging from 298.15 to 348.15 K. The molality range investigated is from 0.0705 to 3.4451 mol-kg(-1). Osmotic coefficients are calculated by taking into account the second virial coefficient of ethanol. The parameters of the extended Pitzer ion-interaction model of Archer, the MSA-NRTL model, and the chemical model of Barthel are evaluated and discussed. The parameters of the extended Pitzer ion-interaction model of Archer are used to calculate the mean molal activity coefficients. Osmotic and activity coefficients both decrease with increasing temperature in this temperature range.
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页码:1429 / 1446
页数:18
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