Abstract

Alkali metal ion-responsive glass and fluoride- or chloride-, responsive ion-selective electrodes have been used to obtain free energies of transfer of alkali metal fluorides and chlorides from water to methanol + water mixtures. The precautions and safeguards necessary to obtain reliable results are discussed. The results obtained for the chlorides are in satisfactory agreement with existing data obtained using amalgam double cells. The method was extended to the determination of free energies of transfer for the alkali metal fluorides from water to hydrogen peroxide + water mixtures and the results obtained were compared with spectroscopically-derived values.

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