Water vapour pressure above saturated salt solutions at low temperatures

• Published in: Fluid phase equilibria Vol. 155; no. 2; pp. 297 - 309
• Main Authors: Morillon, V, Debeaufort, F, Jose, J, Tharrault, J.F, Capelle, M, Blond, G, Voilley, A
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 25.02.1999; Elsevier Science
• Subjects: Chemistry; Exact sciences and technology; Experimental data; General and physical chemistry; Low temperature; Others (including liquid-liquid-vapor equilibria); Phase equilibria; Saturated salt solution; Vapour–liquid–solid equilibria; Water vapour pressure; Water vapour pressure; Saturated salt solution; Experimental data; Vapour–liquid–solid equilibria; Low temperature; Water; Nickel Nitrates; Vapor pressure; Electrolyte solution; Multiphase equilibrium; Transition metal Chlorides; Experimental study; Alkaline earth metal Halides; Alkali metal Halides; Saturated solution; Aqueous solution; Thermodynamic properties; Phase equilibrium; Potassium Nitrites
• ISSN: 0378-3812; 1879-0224
• DOI: 10.1016/S0378-3812(99)00009-6

The properties of water–salt systems in relation to their vapour pressure are studied especially at low temperature. The water vapour pressure of saturated salt solutions of strontium chloride, zinc chloride, nickel chloride, nickel nitrate, magnesium chloride, magnesium bromide, magnesium nitrate, calcium chloride, potassium nitrite, lithium chloride, lithium bromide, lithium iodide and sodium bromide are measured in a temperature range −40 to +10°C. The apparatus used in this study, is well adapted to measure very low pressure with an uncertainty of pressure measurement of 2% for a range between 10 −3 and 10 mm Hg. The experimental values are fitted by Antoine equation with mean percent deviation lower than 1%. Comparison of these values with literature data shows a good agreement.