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.
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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|
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