Isopiestic vapor pressure measurements are performed to study the ternary KCl + KBr + H2O system at 298.15 K. The modeling purposes achieved based on the experimental osmotic coefficients regression of the ternary system. The present calculations are conducted for electrolyte molalities ranging from 0.3 up to about 4.3 mol kg-1 with various ionic strength fractions of KCl ( yB=mKCl (mKCl +mKBr ) = 0.25 , 0.51 and 0.75 ) . Finally, mean activity coefficients (a+-), osmotic coefficients (o) and excess Gibbs free energies (Gex) are calculated and compared using the Extended Pitzer (EP) and the Pitzer Simonson Clegg (PSC) equations.
Compounds
#
Formula
Name
1
ClK
potassium chloride
2
BrK
potassium bromide
3
H2O
water
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.