Solvation of fluoride ions. II. Enthalpies and entropies of transfer from water to aqueous methanol
Hefter, G.T. and McLay, P.J. (1988) Solvation of fluoride ions. II. Enthalpies and entropies of transfer from water to aqueous methanol. Australian Journal of Chemistry, 41 (12). pp. 1971-1975.
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Enthalpies of transfer of potassium fluoride from water to water-methanol mixtures over the whole composition range have been determined by calorimetry. Combination of these values with literature data has enabled calculation of the enthalpies and entropies of transfer for the individual ions through the tetraphenylarsonium tetrapbenylborate ( tatb ) assumption. The values of ΔtH°(F-) and ΔtS°(F-) show a complex dependence on solvent composition which closely parallels the dependence of the other halide ions. These effects are discussed in terms of ion-solvent and solvent-solvent interactions. The halide ions appear to be (weakly) preferentially solvated by H2O, and the alkali metal ions by MeOH.
|Publication Type:||Journal Article|
|Murdoch Affiliation:||School of Mathematical and Physical Sciences|
|Publisher:||Commonwealth Scientific and Industrial Research Organization Publishing|
|Copyright:||© CSIRO 1988|
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