CORRELATION OF VISCOSITY PARAMETERS AND ENTHALPY OF SOLUTIONS OF ELECTROLYTES IN WATER-ORGANIC SOLVENTS

被引：9

作者：

TANIEWSKAOSINSKA, S ^{[1
]}

NOWICKA, B ^{[1
]}

KACPERSKA, A ^{[1
]}

BALD, A ^{[1
]}

机构：

[1] UNIV LODZ,DEPT CHEM DIDACT,PL-90136 LODZ,POLAND

来源：

PHYSICS AND CHEMISTRY OF LIQUIDS | 1993年 / 25卷 / 02期

关键词：

MIXTURES; RELATIVE VISCOSITY; ENTHALPY;

D O I：

10.1080/00319109308030352

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：

Viscosity measurements of NaClO4 solutions in water tetrahydrofuran (THF) mixtures have been performed at 25-degrees-C. The salt concentration was 0.05 mol kg-1 of solvent. A minimum in the relative viscosity corresponding to 5 mol% and a maximum to ca. 70 mol% THF have been observed. The correlation between relative viscosity eta(r) and the standard enthalpy of solution, DELTAH(s)0 has been found to be linear in the system investigated in the water-rich region. The correlation between the B coefficients of the Jones-Dole equation or relative viscosity, eta(r), and DELTAH(s)0 has been tested for other electrolyte-water-organic solvent systems. For all of them linear correlations have been observed in the water-rich region. Deviations from linearity have been found for solutions containing THF and alcohols (except methanol and ethanol) in the organic solvent-rich region. It has been shown that one of the causes of the observed deviations is the formation of an ion-pair.

引用

页码：113 / 125

页数：13

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BALD A, IN PRESS THERMOCHIMI

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