The solubilities of FeSO4*7H2O in the H2SO4 Ti(SO4)2 H2O and H2SO4 MgSO4 H2O systems were measured with a dynamic method from 278.15 to 308.15 K. Due to the hydrolysis property of Ti(IV), it was found that the common ion effect of Ti(SO4)2 was not so obvious as that of MgSO4 for the solubility of FeSO4*7H2O. The solubility of FeSO4*7H2O in the HCl H2O system was also measured by same method. The solubility did not change much at first, yet substantially increased when more HCl was added into the solution. New interaction parameters of ions for the mixed-solvent electrolyte (MSE) model were regressed by the experimental solubility data, with the average relative deviations of less than 5.0%. The speciation and the activity coefficients of species in the FeSO4 HCl H2O system with an FeSO4 concentration of 1.0 mol*kg 1 were predicted by the MSE model with the newly regressed parameters at 303.15 K.
Compounds
#
Formula
Name
1
FeO4S
iron(II) sulfate
2
ClH
hydrogen chloride
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.