Ultrasonic and Thermodynamic Study on Solute-Solvent Interaction. Binary Mixtures of t-Butyl Chloride, t-Butyl Bromide and 1,1,1-Trichloroethane with Carbon Tetrachloride, Benzene and p-Xylene

Sound velocity and density of binary mixtures of t-butyl chloride (tBC), t-butyl bromide (tBB), and 1,1,1-trichloroethane (TCE) with carbon tetrachloride (CT), benzene (B), and p-xylene (pX) were measured at temperatures, 25 and 35°C. The excess molar volume and excess compressibility of these systems were calculated. The temperature dependency of excess volume was negative for aromatic solutions and positive for CT solutions. The temperature coefficients of excess compressibility were negative for all systems. The relation between thermodynamic properties and intermolecular interactions in these systems were discussed. Two systems, B-TCE and CT-TCE, were found to be nearly ideal. The solute-solvent interactions in CT-tBC and tBC-TCE systems were found to be more attractive than in other systems.