Some theoretical considerations concerning ion hydration in the case of ion transfer between water and 1,2-dichloroethane
C. Sanchez, S. A. Dassie, A. M. Baruzzi, E. P. M. Leiva
Abstract
Some aspects of direct ion transfer across the water/1,2-dichloroethane are analyzed using a very simple model based on thermodynamic considerations. It was concluded that ion solvation by water molecules may occur in some particular cases in the organic phase, delivering an important contribution to the Gibbs free energy of ion transfer between the aqueous and the organic phase. In general terms, this particular type of transfer should be favored in the case of highly charged small ions at interfaces with a relatively low surface tension and a large difference between the reciprocal of the corresponding dielectric constants.
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