6533b871fe1ef96bd12d0e27

RESEARCH PRODUCT

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

Filippo AccascinaRaymond M. FuossAlessandro D'aprano

subject

ChemistryIsotopes of lithiumInorganic chemistryBiophysicsAnalytical chemistryConductanceBiochemistryGibbs free energySolventchemistry.chemical_compoundsymbols.namesakeMolar volumePairingsymbolsPhysical and Theoretical ChemistrySolvent effectsMolecular BiologyFluoride

description

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.

https://doi.org/10.1007/bf00650645