In this work, we have made some thermodynamic investigations about the NaNO3 Cd(NO3)2 H2O ternary system. The potential difference method of the battery cell, Na ISE|NaNO3 (m1), Cd(NO3)2 (m2)|NO3 ISE, was used to study the activity coefficients in this mixed system at 298.15 K in the total ionic strengths range 0.0100 1.0000 mol*kg 1 with different ionic strength fractions yb of Cd(NO3)2 with yb = (0, 0.2, 0.4, 0.6, and 0.8). There was a good Nernst response between Na ISE and NO3 ISE in this work, and the mean activity coefficients of NaNO3 can be interpreted well by the Pitzer models. Furthermore, the mixing Pitzer ion interaction parameters of Na,Cd and Na,Cd,NO3 were fitted from Pitzer s equation, and the two parameters were applied to compute the values of the mean activity coefficients of Cd(NO3)2, the osmotic coefficients, the solvent activity, and the excess Gibbs free energy in this mixed system.
Compounds
#
Formula
Name
1
NNaO3
sodium nitrate
2
H2O
water
3
CdN2O6
cadmium nitrate
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.