Vapor liquid equilibria of binary tri-potassium citrate +water and ternary polypropylene oxide 400 + tri-potassium citrate +water systems from isopiestic measurements over a range of temperatures
Water activity measurements have been carried out on the aqueous solutions of both tri-potassium citrate (K3Cit) and polypropylene oxide (PPO) 400 +K3Cit over a range of temperatures at atmospheric pressure. The data obtained is used to calculate the vapor pressure as a function of temperature and concentration. The effect of temperature on the constant water activity lines of aqueous PPO +K3Cit systems has been studied and it was found that, at higher temperatures the higher concentration of polymer is in equilibrium with a certain concentration of the salt. Also it was found that the vapor pressure depression for an aqueous PPO +K3Cit system is more than the sum of those for the corresponding binary solutions. The experimental water activities have been correlated successfully with the segment-based local composition Wilson model. The agreement between the correlation and the experimental data is good.
Compounds
#
Formula
Name
1
C6H5K3O7
potassium citrate
2
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.