A nonisothermal static device was used to make measurements of vapor pressures in the ternary {NaCl (1) + Na2SO4 (2) + H2O (3)} system between 298 K and 363 K with molality ratios m1/m2 = 1/10 and m1/m2 = 1/1. Experimental data were fitted using empirical relation proposed by Appelblat. Dissolution enthalpies of both anhydrous sodium chloride and sodium sulfate in water were also measured up to saturation conditions at 297.8 K, 317.5 K, and 332.4 K (with m1/m2 = 1/10, m1/m2 = 1/1, and m1/m2 = 10/1, respectively) by using a Setaram C80D differential calorimeter. These calorimetric data were used to establish the analytical expressions of Pitzer and NRTL electrolyte's parameters as a function of temperature. The ability of both models to represent both the dissolution enthalpies and the activities of water were tested.
Compounds
#
Formula
Name
1
H2O
water
2
ClNa
sodium chloride
3
Na2O4S
sodium 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.