Acoustic studies of binary mixtures of N-methylacetamide with some chloroethanes and chloroethenes at 308.15 K
2006
The densities and speeds of sound of mixtures of 1,2 dichloroethane, 1,1,2 trichloroethane, 1,1,2,2 tetrachloroethane, trichloroethene and tetrachloroethene with N-methylacetamide, over the entire range of composition, have been measured at a temperature of 308.15 K. The deviations in speed Δu, isentropic compressibility AKs, intermolecular free-length ΔL F and relative association R A have been computed using speed and density values. The Au values are negative whereas ΔK S and ΔL F values are positive for all the systems, which indicate the non-specific interactions between unlike molecules. The results are discussed in the light of intermolecular interactions occurring in the solutions. The computed results of AKs, have been fitted to a Redlich-Kister type polynomial equation.
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