Temperature Dependence of Vapor Pressures over Saturated Aqueous Solutions at Invariant Points of the NaCl + KCl + H₂O, NaCl + NaNO₃ + H₂O, KCl + KBr + H₂O, KCl + KI + H₂O, KCl + KNO₃ + H₂O, and KCl + K₂SO₄ + H₂O Systems

Abstract

Vapor pressures of water over saturated solutions with regard to two salts, in the NaCl + KCl + H2O, NaCl + NaNO3 + H2O, KCl + KBr + H2O, KCl + KI + H2O, KCl + KNO3 + H2O, and KCl + K2SO4 + H2O systems, are reported in the (278 to 323) K temperature range. The determined vapor pressures served to obtain the water activities, the osmotic coefficients, and the molar enthalpies of vaporization.

Thermodynamic modeling of aqueous Na + –K + –Cl − –SO 4 2− quaternary system with electrolyte NRTL model

“…Fig. 6 shows a satisfactory match between the vapor pressure data of Apelblat and Korin [42] for saturated aqueous solutions of K 2 SO 4 + KCl + H 2 O ternary and the model results. The model slightly under-predicts the vapor pressure at higher temperatures and the maximum deviation is less than 5%.…”

Vapor–Liquid Equilibria Study of the LiCl + CaCl2 + H2O System

“…Vapor–liquid equilibrium in the NaCl-KCl-H 2 O system. Empty symbols (black box, m NaCl = 5.8 mol/kg, m KCl = 0.6 mol/kg; red circle open, m NaCl = 3 mol/kg, m KCl = 0.7 mol/kg) for literature data 17 and full symbols (black box solid, m NaCl = 5.8 mol/kg, m KCl = 0.6 mol/kg; red solid circle, m NaCl = 3 mol/kg, m KCl = 0.7 mol/kg) for experimental data.…”

Measurements of Vapor Pressures of Aqueous Solutions in the NaCl–KCl–H2O System from 493.15 to 693.25 K in a Fused Silica Capillary High-Pressure Optical Cell

“…The experimental data for the vapor pressures of single electrolyte aqueous solutions containing NaCl or KCl have been extensively reported in the literature. − However, the vapor pressure data of the ternary NaCl–KCl–H 2 O system are rather limited. , The previous data include those determined by Marcus and Soffer at 298.15 K and between 303.15 and 318.15 K, and by Shiah and Tseng between 278.15 and 343.15 K. The vapor pressures of aqueous solutions saturated with both salts were determined by Leopold and Johnston from 295.34 to 304.23 K, by Winston and Bates at 293.15, 298.15, and 303.15 K, and by Adams and Merz and Harvie et al at 298.15 K.…”