The molar enthalpies of solution and vapour pressures of saturated aqueous solutions of aluminium chloride, aluminium nitrate and aluminium sulphate

被引：8

作者：

Apelblat, A ^{[1
]}

Korin, E ^{[1
]}

机构：

[1] Ben Gurion Univ Negev, Dept Chem Engn, IL-84105 Beer Sheva, Israel

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 2002年 / 34卷 / 12期

关键词：

vapour pressures; saturated solutions; water activities; osmotic coefficients; molar enthalpies of vaporization and solution;

D O I：

10.1016/S0021-9614(02)00188-X

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Vapour pressures of water over saturated solutions of aluminium chloride, aluminium nitrate and aluminium sulphate were determined as a function of temperature. The vapour pressures served to evaluate the water activities, osmotic coefficients and molar enthalpies of vaporization. Molar enthalpies of solution of aluminium chloride hexahydrate, Delta(sol)H(m)(AlCl3 (.) 6H(2)O, T = 295.02 K, m = 0.02084 mol (.) kg(-1)) = -(54.6 +/- 2.1) kJ (.) mol(-1), aluminium nitrate nonahydrate, Delta(sol)H(m)(Al(NO3)(3) (.) 9H(2)O; T = 296.62K, m = 0.01342mol (.) kg(-1)) = (30.7 +/- 1.0)kJ (.) mol(-1) and aluminium sulphate octadecahydrate, Delta(sol)H(m)(Al-2(SO4)(3) (.) 18H(2)O, T = 297.60K, m = 0.00756 mol (.) kg(-1)) = -(46.4 +/- 2.5)kJ (.) mol(-1), were determined calorimetrically. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：1919 / 1927

页数：9

共 29 条

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