Evidence of solvation of aqueous electrolytes in a range from diluted to concentrated solutions

Parameters of solvation of strong electrolytes in aqueous solutions have been investigated based on literature data on their densities, thermal capacities, and rates of ultrasound propagation. By using appropriate thermodynamic equations, such quantitative parameters of solvation as hydration number (h), molar adiabatic compressibility of the hydrated forms (β _h V _h ), volume (V _1h ), and compressibility (β_1h ) of water in the hydrated shells of ions have been determined in the temperature interval from 278.15 to 323.15 K. It has been demonstrated that the h and β _h V _h values are temperature-independent within the studied interval and that electrostrictive compression near ions has a stronger effect on their structure than a simple change in pressure.