Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Thermodynamic studies of (RbF + RbCl + H2O) and (CsF + CsCl + H2O) ternary systems from potentiometric measurements at T = 298.2 K

Huang, X.[Xiaoting], Li, S.[Shu'ni], Zhai, Q.[Quanguo], Jiang, Y.[Yucheng], Hu, M.[Mancheng]
J. Chem. Thermodyn. 2016, 103, 157-164
ABSTRACT
Thermodynamic properties of (RbF + RbCl + H2O) and (CsF + CsCl + H2O) systems were determined by the potentiometric method for different ionic strength fractions yB of RbCl/CsCl at 298.2 K. The Pitzer model and the Harned rule were used to fit the experimental values. The Pitzer mixing parameters and the Harned coefficients were evaluated. In addition, the mean ionic activity coefficients of RbF/CsF and RbCl/CsCl, the osmotic coefficients, and the excess Gibbs energies of the systems studied were calculated.
Compounds
# Formula Name
1 H2O water
2 ClRb rubidium chloride
3 FRb rubidium fluoride (RbF)
4 ClCs cesium chloride
5 CsF cesium fluoride (CsF)
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
  • 1
  • 2
  • 3
  • Mean ionic activity coefficient - 3 ; Liquid
  • Molality, mol/kg - 3; Liquid
  • Molality, mol/kg - 2; Liquid
  • Pressure, kPa; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Calculated from EMF cell potential
  • 46
  • POMD
  • 4
  • 1
  • 5
  • Mean ionic activity coefficient - 5 ; Liquid
  • Molality, mol/kg - 5; Liquid
  • Molality, mol/kg - 4; Liquid
  • Pressure, kPa; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Calculated from EMF cell potential
  • 62
  • POMD
  • 1
  • 3
  • Mean ionic activity coefficient - 3 ; Liquid
  • Molality, mol/kg - 3; Liquid
  • Pressure, kPa; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Calculated from EMF cell potential
  • 16
  • POMD
  • 1
  • 5
  • Mean ionic activity coefficient - 5 ; Liquid
  • Molality, mol/kg - 5; Liquid
  • Pressure, kPa; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Calculated from EMF cell potential
  • 20