Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

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

Apelblat, A.[Alexander], Korin, E.[Eli]
J. Chem. Eng. Data 2009, 54, 5, 1619-1624
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.
Compounds
# Formula Name
1 H2O water
2 ClNa sodium chloride
3 ClK potassium chloride
4 NNaO3 sodium nitrate
5 BrK potassium bromide
6 IK potassium iodide
7 KNO3 potassium nitrate
8 K2O4S potassium sulfate
Datasets
The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type Compound-# Property Variable Constraint Phase Method #Points
  • POMD
  • 3
  • 2
  • 1
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Crystal - 2
  • Crystal - 3
  • Gas
  • electronic hygrometer
  • 36
  • POMD
  • 4
  • 2
  • 1
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Crystal - 2
  • Crystal - 4
  • Gas
  • hygrometer
  • 10
  • POMD
  • 3
  • 1
  • 5
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Crystal - 3
  • Crystal - 5
  • Gas
  • hygrometer
  • 47
  • POMD
  • 3
  • 6
  • 1
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Crystal - 3
  • Crystal - 6
  • Gas
  • hygrometer
  • 63
  • POMD
  • 3
  • 1
  • 7
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Crystal - 3
  • Crystal - 7
  • Gas
  • hygrometer
  • 40
  • POMD
  • 3
  • 1
  • 8
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Crystal - 3
  • Crystal - 8
  • Gas
  • hygrometer
  • 49