Activity Coefficients of Potassium Chloride and Sodium Chloride in the Quaternary System KCl-NaCl-Water-ethanol

摘要

Activity coefficients of KCl and NaCl were determined in the quaternary system KCl-NaCl-water-ethanol, for 10 and 20% (w/w) ethanol in the solvent, from experimental electromotive force data. The molatilities varied from 0.1 mol kg~(-1) to near saturation and measurements were taken in the temperature range 20 to 50 deg C. The Pittzer-Simonson equations were used to describe the nonideal behavior of both electrolytes and the corresponding activity coefficients were determined for each solvent and temperature.