Vapor Pressures and Enthalpies of Vaporization of Aqueous Solutions of Triethylammonium Chloride, 2-Hydroxyethylammonium Chloride, and Tris(hydroxymethyl)aminomethane Hydrochloride

Abstract

The vapor pressures of the aqueous solutions of three organic salts, triethylammonium chloride, 2-hydroxyethylammonium chloride, and tris(hydroxymethyl)aminomethane hydrochloride were measured from 298.15 K to 333.15 K and regressed by the Patil et al. model. The vapor pressure data were used to calculate enthalpies of vaporization by the Clausius−Clayperon equation. The concentration of salt is from 0.5 mol·kg-1 to saturation depending on the solubility of that salt. The vapor pressures of the present aqueous solutions are not much different from those of three organic salts in our previous study.