Density, viscosity, and speed of sound data for (sulfolane + ethyl acetate (EA)), (sulfolane + n-propyl acetate (PA)), and (sulfolane + n-butyl acetate (BA)) were determined at T ) (303.15 to 313.15) K. From this data, excess molar volume and deviation in isentropic compressibility, ∆κ s , have been calculated. The computed properties were fit to a Redlich-Kister polynomial.

The excess isentropic compressibilities are computed by measuring the density and speed of sound of binary mixtures of N-methylacetamide with ethyl acetate, ethyl chloroacetate, and ethyl cyanoacetate over the entire range of volume fraction in the temperature range of (303.15 to 318.15) K. The experimental results are fitted to a Redlich-Kister type polynomial equation. Estimated coefficients and standard deviation values are also presented.

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The speed of sound and density of 1-phenyl-ethanone, 1-phenyl-propan-1-one, 1-p-tolyl-ethanone, and 1-(4-chloro-phenyl)-ethanone with N-methyl-acetamide, over the entire range of composition, have been measured at a temperature of 308.15 K. From the above experimental data, values of deviations in the speed of sound and isentropic compressibility have been calculated. The results are fitted to the Redlich−Kister polynomial equation of the third degree to derive the binary coefficients and standard deviations. Furthermore, the experimental results are used to study the nature of the binary interactions in these mixtures.

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