Medium effects on the first and second dissociation reactions of adipic acid in ethanol-water mixtures

被引：0

作者：

El-Naggar, GA ^{[1
]}

El Batouti, M

Zaghloui, AA

机构：

[1] Univ Alexandria, Fac Educ, Damanhour Branch, Dept Chem, Alexandria, Egypt

[2] Univ Alexandria, Fac Sci, Dept Chem, Alexandria, Egypt

来源：

BULLETIN OF ELECTROCHEMISTRY | 2001年 / 17卷 / 02期

关键词：

adipic acid; dissociation of dicarboxylic acid; dielectric constant of thermodynamic parameters of dissociation and solvent effect on;

D O I：

暂无

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The first and second dissociation constants of adipic acid has been determined by a precise EMF method in water and in aqueous binary mixtures of ethyl alcohol, over a wide range of solvent composition (0-70 wt% ethanol). Measurements were made at different temperatures, ranging from 303 to 333 K at intervals of 283 K by EMF measurements. The thermodynamic parameters (DeltaH(0), DeltaG(0) and DeltaS(0)) for the first and second dissociation reactions have been computed, discussed and analyzed in terms of solute-solvent interactions. The pK values has been correlated with the mole fraction of the organic solvent and finally the effect of dielectric constant on the dissociation processes was discussed.

引用

页码：65 / 72

页数：8

共 37 条

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