The vapour pressures of saturated aqueous solutions of magnesium, calcium, nickel and zinc acetates and molar enthalpies of solution of magnesium, calcium, zinc and lead acetates

被引：10

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 | 2001年 / 33卷 / 01期

关键词：

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

D O I：

10.1006/jcht.2000.0731

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 magnesium, calcium, nickel and zinc acetates 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 magnesium acetate tetrahydrate, Delta H-sol(m)(T = 294.71 K; m=0.01 mol.kg(-1))=-(15.65 +/- 0.97 kJ.mol(-1); calcium acetate, Delta H-sol(m)(T = 297.18 K; m=0.01 mol.kg(-1))=-(28.15+/-0.28) kJ.mol(-1); zinc acetate dihydrate, Delta H-sol(m)(T = 297.36 K; m=0.01 mol.kg(-1))=-(22.49+/-0.90) kJ.mol(-1) and lead acetaqte trihydrate, Delta H-sol(m)(T = 297.36 K; m=0.0086 mol.kg(-1)) = (22.46+/-0.94) kJ.mol(-1), were determined calorimetrically. (C) 2001 Academic Press.

引用

页码：113 / 120

页数：8

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