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Ion-solvent interactions and ionic association in ethanol solutions

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Abstract

The electrical conductivities of potassium halides in ethanol have been measured at 25°C. The limiting molar conductances, ionic association constants and the closest approach parameter were calculated (Justice method) and compared with existing literature data. An inversion of the anion size dependence of ionic association constants for these solutions was observed. The results are explained by what has been called ‘localized solvolysis,’ in which both the cation and the anion of the solvent separated ion pair are connected with different parts of the separating solvent molecule by donor-acceptor bonding. A correlation between K A and protonic affinity of anions was found. Similar literature data for aqueous and non-aqueous solutions are also examined.

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Authors and Affiliations

  1. Chemistry Department, Israel Oceanographic and Limnological Research Institute, P.O.B. 8030, Haifa, Israel

    Boris S. Krumgalz

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  1. Boris S. Krumgalz
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Krumgalz, B.S. Ion-solvent interactions and ionic association in ethanol solutions. J Solution Chem 11, 283–293 (1982). https://doi.org/10.1007/BF00657319

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