Abstract
Excess molar values (V E) and speeds of sound (u) for the binary mixtures of acetophenone with 1,2-dichlorobenzene, 1,3-dichlorobenzene and 1,2,4-trichlorobenzene have been measured at 303.15 K. Excess volumes are positive over the entire composition range in all the three binary mixtures. Isentropic compressibilities (K s) have been computed for the same systems from precise sound velocity and density data. Further, deviation in isentropic compressibility (ΔK s) from ideal behaviour was also calculated. ΔK s, values exhibit negative sign in all the mixtures. The experimental sound velocity data are analyzed in terms of free length theory (FLT) and collison factor theory (CFT). The measured data is explained on the basis of intermolecular interactions between unlike molecules.
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