The Ultrasonic velocity, density, and viscosity have been measured for aqueous solution of NaCl at different concentrations, at different temperatures and at constant frequency (9 MHz). These experimental data have been used to estimate the thermodynamic parameters such as adiabatic compressibility, free length, internal pressure, relaxation time, acoustic impedance, and Gibb’s free energy for the solution. This kind of study is important for both humans as well as plants.
