Thermodynamic Modeling of Apparent Molal Volumes of Metal Nitrate Salts with Pitzer Model
2015
The apparent molal volumes of selected metal nitrate salts, Al(NO3)3, Fe(NO3)3, and Mn(NO3)2, in water have been assessed from the available density measurements of their aqueous solutions at 25 °C over a wide molality range. The values of ϕV have been fitted to the Pitzer model using its volumetric contributions. The model parameters β(0)V, β(1)V, CφV, and V0 were determined for each aqueous electrolyte, over the composition range from 0 to about 3.5 mol·kg–1 H2O. The new experimental data and parameters obtained will be useful to extend the present database of electrolyte solutions as well as its application areas, allowing management of many physical properties of aqueous solutions in a numerical way in various end-uses.
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