Solute-Solvent interactions in water-rich mixtures. II. Ionic conductances in water-dimethylsulfoxide mixtures at 25°C期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Solute-Solvent interactions in water-rich mixtures. II. Ionic conductances in water-dimethylsulfoxide mixtures at 25°C

Authors:	Giuseppe Petrella Mario Petrella Maurizio Castagnolo Angelo Dell'Atti Angelo De Giglio

Affiliation:	(1) Institute of Physical Chemistry, University of Bari, Via Amendola 173, 70126 Bari, Italy;(2) Institute of Applied Chemistry, University of Bari, Via Re David 200, 70125 Bari, Italy

Abstract:	Conductances of sodium bromide, iodide, and perchlorate, potassium chloride, and tetraphenylboride (BPh₄^–) as well as triisoamyl-n-butylammonium iodide (i-Am₃BuNI) have been measured in aqueous mixtures containing up to 20 mole percent dimethylsulfoxide (DMSO) at 25°C. Experimental data were analyzed by the 1965 Fuoss-Onsager-Skinner (FOS) equation. Single-ion limiting equivalent conductances were calculated by assuming that ₀ (i–Am₃BuN⁺=₀ (BPh₄^–). The variations of the limiting ionic Walden products are discussed on the basis of acid-base type interactions for cations, and on the basis of structural effects for anions.

Keywords:	Conductance Walden products aqueous dimethylsulfoxide mixtures sodium and potassium chloride sodium bromide iodide, and perchlorate sodium tetraphenylboride triisoamylbutylammonium iodide
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