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Australian Journal of Chemistry Australian Journal of Chemistry Society
An international journal for chemical science
RESEARCH ARTICLE

Solvent structure. III. The dependence of partial molal volumes on internal pressure and solvent compressibility

MRJ Dack

Australian Journal of Chemistry 29(4) 779 - 786
Published: 1976

Abstract

Partial molal volumes, Vº, at 25ºC were measured for sucrose, ascorbic acid and aspirin in the solvents water, formamide, N,N-dimethylformamide and methanol. The dependence of Vº on solvent compressibility enabled an estimate to be made of the intrinsic volumes, Vint, of the dissolved non-electrolytes. Effective pressures, Pe, in aqueous electrolyte solutions were calculated from previously determined internal pressure data. Substitution of Pe into the Tait-Gibson equation yielded values of Ve, the volume contraction of water due to electrostriction, which agree well with values obtained by other methods.

https://doi.org/10.1071/CH9760779

© CSIRO 1976

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