Author:
Dack MRJ,Bird KJ,Parker AJ
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.
Cited by
102 articles.
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