An analysis of electrical conductances of aqueous solutions of polybasic organic acids. Benzenehexacarboxylic (mellitic) acid and its neutral and acidic salts

被引：22

作者：

Apelblat, A ^{[1
]}

Bester-Rogac, M

Barthel, J

Neueder, R

机构：

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

[2] Univ Ljubljana, Fac Chem & Chem Technol, SI-1000 Ljubljana, Slovenia

[3] Univ Regensburg, Inst Phys & Theoret Chem, D-93040 Regensburg, Germany

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2006年 / 110卷 / 17期

关键词：

D O I：

10.1021/jp057371s

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：

A general approach is proposed to analyze electrical conductivities in aqueous solutions of polybasic organic acids. Experimental conductivities are examined in the context of dissociation and hydrolysis reactions by applying the Quint-Viallard conductivity equations and the Debye-Huckel equations for activity coefficients. The proposed numerical procedure is illustrated by the case of benzenehexacarboxylic (mellitic) acid and its neutral and acidic salts. From conductivity measurements of mellitic acid and its salts, performed in dilute aqueous solutions in the 278.15-308.15 K temperature range, the limiting conductances of mellitic anions, lambda(0)(1/jH(6-j)Mel(-1), T), j = 1, 2, 3, 4, 5, 6 are determined.

引用

页码：8893 / 8906

页数：14

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