ULTRASONIC VELOCITIES AND ISENTROPIC COMPRESSIBILITIES OF SOME TETRAALKYLAMMONIUM AND COPPER(I) SALTS IN ACETONITRILE AND BENZONITRILE

被引:41
|
作者
SINGH, J [1 ]
KAUR, T [1 ]
ALI, V [1 ]
GILL, DS [1 ]
机构
[1] PANJAB UNIV,DEPT CHEM,CHANDIGARH 160014,INDIA
关键词
D O I
10.1039/ft9949000579
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
Ultrasonic velocities and densities of Bu4NBPh4, Pr4NBPh4, Et4NBPh4, BU4NClO4, Pr4NClO4, Et4NClO4, Bu4Nl, CUClO4 . 4CH3CN and [Cu(DMPhen)2]ClO4 in acetonitrile and benzonitile have been measured at 298, 308 and 318 K. The isentropic compressibilities (kappa(S)) and apparent molal compressibilities (kappa(phi)) of various electrolytes have been evaluated. The limiting apparent molal compressibilities (kappa(phi)O) for all electrolytes have been obtained by extrapolation of the plots of kappa(phi) vs. square root of molality (m1/2) and split into limiting ionic compressibilities (kappa(phi+/-)O. Kappa(phi+/-)O is positive in benzonitrile except for Et4N+ and is negative in acetonitrile except for BU4N+, Ph4B-and Pr4N+. The results indicate stronger solvation of ions in acetonitrile than in benzonitrile.
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页码:579 / 582
页数:4
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