Abstract
The objective for this research was to employ the extended adsorption isotherm (EAI) to develop a predictive relationship between the activity of H2O (aw) and the mean ionic activity (a±) of aqueous HNO3. The EAI model is a calculative approach to the estimation of solutions for activities of highly non-ideal chemical systems and is the collective efforts of Stokes and Robinson, Abraham, and Ally and Braunstein. From previous works of the HNO3-H2O system by Rains et al., a predictive model of relevant aqueous phase activities was developed that only needs knowledge of composition and temperature of the HNO3 solution.
ACKNOWLEDGEMENTS
This work was supported by the US Department of Energy by contract DE-FC07-06ID14735, the Aid to Education Program of E. I. du Pont de Nemours and Company and Oak Ridge National Laboratory (ORNL); ORNL is managed and operated by UT-Battelle, LCC under DOE Contract No. DE-AC05-000R22725 with ORNL.