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Speed of ultrasound and thermodynamic properties of n-tetradecane in binary liquid mixtures at 298.15 K.

Densities, viscosities and ultrasonic velocities of binary mixtures of n-tetradecane with hexan-1-ol, heptan-1-ol, octan-1-ol, decan-1-ol and dodecan-1-ol have been measured over the entire range of composition at 298.15, K and at atmospheric pressure. From the experimental values of density, viscosity and ultrasonic velocity, the excess molar volumes (V E ) and excess isentropic compressibility (k E s) have been calculated. The excess molar volumes and deviations in isentropic compressibility have been fitted to the Redlich–Kister polynomial equation. McAllister’s multibody interaction model used to correlate kinematic viscosity data. Jouyban-Acree model is also used to correlate the experimental values of density, viscosity and ultrasonic velocity at T=298.15 K. The effects of size and shape of the components on excess properties has been discussed. The results were discussed in terms of molecular interactions prevailing in the mixtures.