The limiting partial molar volume and transfer partial molar volume of glycylglycine in aqueous sodium halide solutions at 298.15 K and 308.15 K

被引：47
|
作者：
Lin, GM [1 ]
Bian, PF [1 ]
Lin, RS [1 ]
机构：
[1] Zhejiang Univ, Dept Chem, Hangzhou 310027, Peoples R China
来源：
JOURNAL OF CHEMICAL THERMODYNAMICS | 2006年 / 38卷 / 02期
基金：
中国国家自然科学基金;
关键词：
limiting partial mole volume; glycylglycine; NaX;
D O I：
10.1016/j.jct.2005.04.012
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Apparent volumes V-Phi of glycylglycine in aqueous NaX (X = F-, Cl-, and Br-) solutions have been obtained from densities of their solutions at 298.15 K and 308.15 K measured by using a precise vibrating-tube digital densimeter. These values have been utilized in conjunction with the values in water to deduce partial molar volumes of transfer Delta(trs) V-Phi(o) from water to different aqueous NaX solutions. Delta V-trs(Phi)o values are positive. The interpretation is that these results arise from the dominant interaction of the NaX with the charged centers of glycylglycine. The results show that Delta V-trs(Phi)o depend less on the temperature. Hydration numbers and interaction coefficients have been calculated from V-Phi(o) and Delta V-trs(Phi)o values and the values have been interpreted in terms of various interactions. (C) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：144 / 151
页数：8
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