SPEED OF SOUND AND ISENTROPIC COMPRESSIBILITIES OF TERNARY MIXTURES CONTAINING BUTYLACETATE(1) PLUS PROPANOL(2) PLUS AROMATIC-HYDROCARBONS AND BUTYLACETATE(1) PLUS BUTANOL(2) PLUS AROMATIC HYDROCARBONS(3) RESPECTIVELY AT 303.15 K

Isentropic compressibilities of ten ternary mixtures butylacetate(1) propanol(2) + benzene(3), + toluene(3), + chlorobenzene(3), + bromobe nzene(3), + nitrobenzene and butylacetate(1) + butanol(2) + benzene(3) , + toluene(3), chlorobenzene(3), + bromobenzene(3) and + nitrobenzene (3) respectively were determined from speed of sound measurements at 3 03.15 K. The deviations in the isentropic compressibility were also co mputed. 'Values of dKs(123) are positive in mixtures of butylacetate(1 ) + propanol(2) + benzene(3) and + toluene(1) and butylacetate(1) + bu tanol(2) + benzene(3) + toluene(3) and chlorobenzene(3). dKs(123) is n egative in the systems, butylacetate(1) + propanol(2) + chlorobenzene( 3), + bromobenzene(3), + nitrobenzene(3) and butylacetate(1) + butanol (2) + bromobenzene(3) and + nitrobenzene(3) correspondingly. An attemp t has also been made to throw light on the nature of intermolecular in teractions via these deviations in isentropic compressibility.