EXCESS VOLUME, SPEED OF SOUND AND ISENTROPIC COMPRESSIBILITIES OF 1,2-DICHLOROETHANE, 1,1,1-TRICHLOROETHANE 1,1,2,2-TETRACHLOROETHANE WITH METHANOL AT 303.15-K

Excess volumes and speed of sound for the binary mixtures of 1,2-dichl oroethane; 1,1,1-trichloroethane and 1,1,2,2-tetrachloroethane with me thanol have been measured at 303.15 K. Excess volumes for the mixtures of 1, 2 dichloroethane and 1,1,1-trichloroethane with methanol are fo und to be positive whereas they are negative for 1,1,2,2-tetrachloroet hane. The experimental speed of sound for these mixtures are found to be in good agreement with theoretical values. The speed of sound and e xcess volumes were used to calculate isentropic compressibilities.