Thermodynamics of dissolution of some dicarboxylic acids in water/ethane-1,2-diol mixtures

被引：4
|
作者：
El-Naggar, GA [1 ]
Selim, SM
Zaghloul, AA
Amira, MF
机构：
[1] Univ Alexandria, Fac Educ, Dept Chem, Damanhour Branch, Alexandria, Egypt
[2] Univ Alexandria, Fac Sci, Dept Chem, Alexandria, Egypt
来源：
ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS | 2002年 / 216卷 / 10期
关键词：
dicarboxylic acids; solvent effects; dissociation constant; thermodynamics; relative permittivity;
D O I：
10.1524/zpch.2002.216.10.1239
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The pK(1) and pK(2) values of malic, malonic, maleic, succinic, tartaric, and phthalic acids have been determined in ethane-1,2-diol-water media of varying solvent compositions (0-50 wt% ethane-1,2-diol) within the temperature range (25-65 degreesC). An extrathermodynamic analysis of the obtained results have been examined, in the light of DeltaHdegrees-DeltaSdegrees relationship. The pK values have been correlated with the relative permittivity of the medium according to Born's electrostatic model.
引用
收藏
页码：1239 / 1260
页数：22
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