Conductivity and volume measurements of aqueous calcium nitrate solutions

Abstract

From conductivity and volume measurements of Ca(NO3)2.3.63H2O, Ca(NO3)2.4.85H2O, Ca(NO3)2.5.98H2O, and Ca(NO3)2.7.O2H2O, over the temperature range 25°C to 150°C and over the pressure range 1 bar to 6 kbar, the following quantities have been calculated, densities, activation volumes, expansivities, compressibilities and internal pressures. Molar conductivity measurements are interpreted in terms of Adam and Gibb's "Configurational Entropy Theory". The dependence of the ideal glass transition temperature on pressure and composition is described in terms of the molar volume at the ideal glass transition temperature and the number of charged species that are present per unit volume.