Abstract
In this work, experimental densities (ρ), speed of sound (u) and refractive indices (nD) were measured over the entire composition range for the binary mixtures containing furfural with dimethyl sulfoxide (DMSO) or acetonitrile at (293.15, 303.15, 313.15 and 323.15) K whereas for sulfolane mixture at (303.15, 313.15 and 323.15) K and at pressure of 0.1 MPa. Further, the measured data has been utilized to compute isentropic compressibility(κs), intermolecular free length(Lf), specific acoustic impedance(Z), relative association(RA), relaxation strength (r) and Rao's molar sound function(R). The excess/derived properties on mixing were also derived from values of measured properties for all studied mixtures under the same experimental conditions. The correlation of excess/derived properties was made by help of the Redlich-Kister polynomial equation and found to be satisfactory. The experimental and calculated results were interpreted from the viewpoint of intermolecular interactions that occur between the components of the investigated systems.
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