Solubilities of L-glutamic acid, 3-nitrobenzoic acid, p-toluic acid, calcium-L-lactate, calcium gluconate, magnesium-DL-aspartate, and magnesium-L-lactate in water

被引：522

作者：

Manzurola, E

Apelblat, A ^{[1
]}

机构：

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

[2] Negev Acad Coll Engn, Dept Chem Engn, Beer Sheva, Israel

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 2002年 / 34卷 / 07期

关键词：

solubilities; organic acids and salts; molar enthalpies of solution;

D O I：

10.1006/jcht.2002.0975

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Solubilities of L-glutamic acid, 3-nitrobenzoic acid, p-toluic acid, calcium-L-lactate, calcium gluconate, magnesiym-DL-aspartate, and magnesium-L-lactate in water were determined in the temperature range 278 K to 343 K. The apparent molar enthalpies of solution at T = 298.15 K as derived from these solubilities are Delta(sol)H(m) (L-glutamic acid, m(sat) = 0.0565 mol . kg(-1)) = 30.2 kJ . mol(-1), Delta(sol)H(m) (3-nitrobenzoic acid, m = 0.0188 mol . kg(-1)) = 28.1 kJ . mol(-1), Delta(sol)H(m) (p-toluic acid, m = 0.00267 mol . kg(-1)) = 23.9 kJ . mol(-1), Delta(sol)H(m) (calcium-L-lactate tetrahydrate, m = 0.2902 mol . kg(-1)) = 25.8 kJ . mol(-1), Delta(sol)H(m) (calcium gluconate, m = 0.0806 mol . kg(-1)) = 22.1 kJ . mol(-1), Delta(sol)H(m) (magnesium-DL-aspartate tetrahydrate, m = 0.1469 mol . kg(-1)) = 11.5 kJ . mol(-1), and Delta(sol)H(m) (magnesium-L-lactate trihydrate, m = 0.3462 mol . kg(-1)) = 3.81 kJ . mol(-1). (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：1127 / 1136

页数：10

共 28 条

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