Ionic conductances in water-sulfolane mixtures at 30°C |
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Authors: | Giuseppe Petrella Antonio Sacco Maurizio Castagnolo Mario Della Monica Angelo De Giglio |
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Affiliation: | 1. Institute of Physical Chemistry, University of Bari, 70126, Bari, Italy
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Abstract: | Conductances of solutions of triisoamyl-n-butylammonium (iAm3BuN+) iodide and sodium tetraphenylboride, iodide, and bromide have been measured in water-sulfolane mixtures at 30°C. Experimental data were analyzed by the 1965 Fuoss-Onsager-Skinner equations. The limiting equivalent conductances of triisoamyl-n-butylammonium tetraphenylboride (iAm3BuNBPh4) in each solvent mixture were obtained by the equation $$Lambda _0 (iAm_3 BuNBPh_4 ) = Lambda _0 ({text{i}}Am_3 BuNI) + Lambda _0 (NaBPh_4 ) - Lambda _0 (NaI)$$ Limiting ionic equivalent conductances in water-sulfolane mixtures were calculated on the assumption thatι 0(iAm 3 BuNBPh 4)/2λ0(iAm 3 BuN +)=λ0(BPh - 4 ). The variations of the limiting ionic Walden product with solvent composition are discussed with respect to current information concerning solvent structural effects and ion-solvent interaction. |
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