Conductance of 1,1-electrolytes in acetonitrile solutions from −40° to 35°C |
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Authors: | J. Barthel L. Iberl J. Rossmaier H. J. Gores B. Kaukal |
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Affiliation: | 1. Institut für Physikalische und Theoretische Chemie, Universit?t Regensburg, D-8400, Regensburg, Federal Republic of Germany
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Abstract: | Conductance data for perchlorates of Li+, K+, Me4N+, Et4N+, Pr4N+, Bu4N+, iodides of K+, Me4N+, i-Am3BuN+, and tetraphenylborates of Na+, Bu4N+ and i-Am3BuN+ in acetonitrile solution in the temperature range −40° to 35°C are reported. Λ° (limiting molar conductance) and KA (association constant) are evaluated for several temperatures using a conductance equation based on the chemical model of electrolyte solutions including short range forces. Limiting molar ion conductances, λ ΰ i , at −35°, −25°, −15°, −5°, 5°, 15° and 25°C are evaluated from temperature dependent limiting transference numbers. Enthalpies and entropies of association, obtained from the temperature dependence of the association constants, are also presented. Dedicated to the memory of Professor Raymond M. Fuoss. |
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Keywords: | Electrolyte conductance ion conductance ion-pair formation acetonitrile solutions alkali metal salts tetraalkylammonium salts non-Coulombic interactions |
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