Determination of acid dissociation constants of some monobasic organic acids in acetonitrile from molar conductance

被引：0

作者：

Nag, Sairlik ^{[1
]}

Datta, Dipankar ^{[1
]}

机构：

[1] Indian Assoc Cultivat Sci, Dept Inorgan Chem, Kolkata 700032, W Bengal, India

来源：

INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY | 2007年 / 46卷 / 08期

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D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The pK(a) values of some 14 monobasic organic acids like carboxylates, phenols, etc, are determined in acetonitrile from conductivity measurements. These pK(a) values are found to be higher than those reported in the aqueous medium on the average by 2.8 (+/- 1.1) pK(a) unit. A thermodynamic rationalisation of this observation is provided. It emerges that an acid should be more acidic in water than in acetonitrile as water being more polar than acetonitrile brings about greater ionisation of an acid.

引用

页码：1263 / 1265

页数：3

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