A simplified model for calculation of the Gibbs energy of mixing in crystals: Thermodynamic theory, restrictions and applicability

被引：18
作者：
Christov, C
机构：
[1] Inst. of Gen. and Inorg. Chemistry, Bulgarian Academy of Sciences
来源：
COLLECTION OF CZECHOSLOVAK CHEMICAL COMMUNICATIONS | 1996年 / 61卷 / 11期
关键词：
mixing energy; crystals; binary ternary solutions;
D O I：
10.1135/cccc19961585
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A simplified model has been set up for calculation of the molar Gibbs energy of mixing Delta(mix)G(m)(s) in crystals based on the assumption of a complete liquid-solid thermodynamic equilibrium in the water-salt systems. The procedure allows the Delta(mix)G(m)(s) values to be calculated from the experimental solubility data for the saturated binary and ternary solutions. The Delta(mix)G(m)(s) values and the excess Gibbs energy of mixing Delta(mix)G(m)(E)(s) were calculated for six alkali-halide systems (KCl-RbCl-H2O, KBr-RbBr-H2O, KI-RbI-H2O, NH4Cl-NH4Br-H2O, RbCl-RbBr-H2O and CsCl-CsBr-H2O). The results obtained were compared with experimental data taken from the literature and values calculated based on various theoretical approaches.
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页码：1585 / 1599
页数：15
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