The ultrasonic velocity, adiabatic compressibility, free length, apparent molar compressibility and apparent molar
volume determination is important tools for investigation of structure of compound and nature of intermolecular force of
attraction between components in homogeneous solution. The attractive and repulsive force between components of solution
shows remarkable effect on physical and chemical properties of solution and subsequently affects density, viscosity and
ultrasonic velocity of solution. In the present work, ultrasonic velocity, density and viscosity of caffeine have been measured at
different concentration and at different temperature. From experimental data different thermo acoustic parameters like
adiabatic compressibility, free length and acoustic impendence have been evaluated. These parameters have been studied in term
of intermolecular interactions between components of this system.
