Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

ABSTRACT

The ultrasonic speed, u of binary mixtures of methyl acrylate with 1-butanol, 1-hexanol, 1-octanol, and 1-decanol, including those of pure liquids, over the entire composition range was measured at temperatures (288.15, 293.15, 298.15, 303.15, 308.15, 313.15, and 318.15) K and at atmospheric pressure. From the experimental results, the isentropic compressibility, ?s, intermolecular free length, Lf, acoustic impedance, Z, relative association, RA, molecular association MA, deviations in isentropic compressibility, ??s, excess intermolecular free length, View the MathML sourceLfE, deviations in ultrasonic speed, ?u, excess molar isentropic compressibility, View the MathML sourceKs,mE, excess acoustic impedance, ZE have been calculated. The partial molar isentropic compressibility, View the MathML sourceK-s,m,1 and View the MathML sourceK-s,m,2, and excess partial molar isentropic compressibility, View the MathML sourceK-s,m,1E and View the MathML sourceK-s,m,2E over the whole composition range, partial molar isentropic compressibility, View the MathML sourceK-s,m,1deg and View the MathML sourceK-s,m,2deg , and excess partial molar isentropic compressibility, View the MathML sourceK-s,m,1deg E and View the MathML sourceK-s,m,2deg E of the components at infinite dilution have also been calculated. The variations of these derived parameters indicate the presence of specific interactions between methyl acrylate and 1-alkanol molecules, which follows the order: 1-butanol greater than 1-hexanol greater than 1-octanol greater than 1-decanol. The values of excess parameters are found dependent on the length of alkyl chain of 1-alkanol molecules.