Relationships of Some Useful Thermodynamic Properties of Liquid with Sound Velocity and Density Data

Abstract

In order to compute various useful and importance
thermodynamic properties of liquids from sound velocity and
density data, a number of correlations have been presented.
Sound velocity and density data for numerous liquids are
available in literature and the experimental measurements of
these properties are very simple and convenient, also very
economical. Such data provides very simple methods of
determining the thermodynamic properties. Expressions of heat
capacity at constant pressure p C , heat capacity at constant
volume v C , heat capacities ratio (g ) , internal pressure int (P ) ,
energy of vaporisation ( ) v △E , cohesive energy density (c)
and solubility parameter (d ) are obtained in terms of density
(r ) and sound velocity (u) on the basis of empirical relations
for thermal expansivity (a ) and isothermal compressibility
( ) T b proposed earlier from this lab.