Volumetric and Ultrasonic Behaviour of 1-Heptanol with Some Chloroethanes and Chloroethenes at 303.15 K

Abstract

Excess volumes (V^E ) and deviations in isentropic compressibilities (K_s ) were reported over the entire mole fraction range for mixtures of 1-heptanol with 1,2-dichloroethane, 1,1,1-trichloroethane, 1,1,2,2-tetrachloroethane, trichloroethene and tetrachloroethene, at 303.15 K. The values of V^E and K_s are positive for the systems, 1-heptanol + 1,2-dichloroethane, +1,1,1-trichloroethane, + trichloroethene and + tetrachloroethene. Inversion in sign of V^E and K_s from positive to negative is observed in mixtures of 1-heptanol with 1,1,2,2-tetrachloroethane. The experimental data were used to explain the effect of successive chlorination and unsaturation of ethane molecule on V^E and K_s .

Key Words:

• Excess volumes
• isentropic compressibilities