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Solvation of ions. XXV. Partial molal volumes of single ions in protic and dipolar aprotic solvents

Dack, M.R.J., Bird, K.J. and Parker, A.J. (1975) Solvation of ions. XXV. Partial molal volumes of single ions in protic and dipolar aprotic solvents. Australian Journal of Chemistry, 28 (5). pp. 955-963.

Link to Published Version: http://dx.doi.org/10.1071/CH9750955
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Abstract

Partial molal volumes at 25° are reported for some 1 : 1 electrolytes, and for triphenylmethane, in dimethyl sulphoxide, N,N- dimethylformamide, acetonitrile, propylene carbonate, formamide and hexamethylphosphoramide. The assumption that ΔV°tr(Ph4As+) = ΔV°tr(BPh4-) was used to obtain ionic partial molal volumes of transfer from water to the non-aqueous solvents. Solvent compressibility appears to determine the partial molal volumes of non-electrolytes and large hydrophobic ions in solution. Values of ΔV°tr for cations and anions are discussed in terms of ion-solvent interactions, solvent-solvent interactions and steric crowding of large solvent molecules around the ions.

Publication Type: Journal Article
Murdoch Affiliation: School of Mathematical and Physical Sciences
Publisher: Commonwealth Scientific and Industrial Research Organization Publishing
Copyright: © 1975 CSIRO
URI: http://researchrepository.murdoch.edu.au/id/eprint/31683
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