Pressure effect on transference numbers for KCl in ethanol-water mixtures at 25.DEG.C.
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概要
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Cation transference numbers for 0.02 mol dm<SUP>−3</SUP> KCl in 0-, 5-, 10-, 15-, 20-, and 30-mol% ethanol–water mixtures were determined by the moving boundary method at 25 °C up to 1500 kg cm<SUP>−2</SUP> (1 kg cm<SUP>−2</SUP>=0.9807×10<SUP>5</SUP> Pa). The cation transference number, <I>t</I><SUB>+</SUB>, initially increases with increasing ethanol content up to 10–15 mol% and then decreases at all the pressures studied. In water and ethanol–water mixtures below 20 mol%, <I>t</I><SUB>+</SUB> at the definite solvent decreases with increasing pressure. The decreasing rate becomes smaller as the ethanol content increases, and the tendency is reversed finally at 30 mol%. To account for the variation of <I>t</I><SUB>+</SUB> with solvent composition and pressure, specific interactions between the ions and solvent have been taken into consideration.
- 公益社団法人 日本化学会の論文
著者
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Shimizu Kiyoshi
Deparment of Applied Chemistry, Faculty of Engineering, Doshisha University
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Ueno Masakatsu
Department of Applied Chemistry, Faculty of Engineering, Doshisha University
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