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The conductance of lithium-7 fluoride in dioxane-water mixtures at 25°C

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Abstract

Conductance data for lithium-7 fluoride in dioxane-water mixtures covering the range 78.35>D>36 in dielectric constant are presented. These data and other previous data on lithium-7 chloride and lithium-7 iodide were analyzed by the Fuoss 1980 conductance equation in order to find the limiting conductance Δo, the pairing distance R and the conductometric association constant Kλ. Setting Ka=Kλ/VM (where VM is the molar volume of the solvent), the thermodynamic pairing constant and the corresponding change of the free energy Δg were calculated. Correlation among the values found for R and Δg=Δh−TΔs and the properties characteristic of the ions and solvents are discussed.

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Authors and Affiliations

  1. Department of Physical Chemistry, University of Palermo, Via Archirafi 26, 90123, Palermo, Italy

    Alessandro D'Aprano

  2. Department of Chemistry, University La Sapienza, Pl.A.Moro 15, OO185, Rome, Italy

    Filippo Accascina

  3. Sterling Chemistry Laboratory, Yale University, O625O, New Haven, CT

    Raymond M. Fuoss

Authors
  1. Alessandro D'Aprano
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  2. Filippo Accascina
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  3. Raymond M. Fuoss
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Additional information

R. M. Fuoss died on 1st December 1987 before this work was completed. A D'Aprano and F. Accascina dedicate this paper to him with respect and affection.

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D'Aprano, A., Accascina, F. & Fuoss, R.M. The conductance of lithium-7 fluoride in dioxane-water mixtures at 25°C. J Solution Chem 19, 65–78 (1990). https://doi.org/10.1007/BF00650645

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  • DOI: https://doi.org/10.1007/BF00650645

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