Study of Temperature Variation of Ultrasonic Velocity and Adiabatic Compressibility in Some Liquids—Part I

Temperature variation of ultrasonic velocity and density is studied in some organic liquids, low melting point organic solids in melt state, and corrosive inorganic liquids. It is found that in all the cases the ultrasonic velocity decreased linearly with increase of temperature. The temperature independence of Rao’s molar sound velocity was studied for the first time in corrosive inorganic liquids and is established. The new relations put forward Kishimoto and Nomoto for temperature coefficients of velocity, density and adiabatic compressibility in terms of boiling point are examined and confirmed. The relation put forward Lagemann M^1/2. \varDelta V/\varDelta T was also examined.