The current study works out on densities 'ρ', ultrasonic speeds of sound 'u' of binary mixtures of propiophenone with n-alcohols e.g., 1-propanol, 1-butanol and 1-pentanol measured over the entire composition range at 303.15 to 318.15 K and at atmospheric pressure 0.1 MPa. The worked out experimental data has been used to calculate various thermodynamic excess parameters like excess molar volume (V E ), excess ultrasonic velocity (U E ), excess acoustic impedance (Z E ), excess intermolecular free-length (Lf E ), deviation in isentropic compressibility (∆Ks), deviation in acoustic impedance (∆Z) and the computed results were fitted with the Redlich Kister equation to estimate the binary coefficients and standard deviation between experimental and calculated data. Partial molar volume of the binary mixtures was calculated to understand more of the intermolecular reactions in the above binary mixtures.

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Ultrasonic velocities (u), viscosities (η) and densities (ρ) were measured for the binary mixtures of p-chloroacetophenone with aniline, N-methylaniline and N,N-dimethylaniline over the whole range of composition at different temperatures (303.15 K to 318.15 K) and at atmospheric pressure 0.1 MPa. Excess molar volume (V E ), deviation in viscosity (∆η) and deviation in isentropic compressibility (∆ks) have been calculated and fitted to Redlich-Kister polynomial equation to obtain their coefficients and standard deviations. The analyzed viscosity data of binary liquid mixtures were used to test the Grunberg-Nissan, Katti-Chaudari and Hind semi-empirical equations. The FTIR spectral study supports the experimental data to explain the molecular interactions between unlike molecules. Partial molar volumes of binary mixtures were evaluated for better understanding of intermolecular interactions of the above binary mixtures.This is an open access journal, and articles are distributed under the terms of the Attribution 4.0 International (CC BY 4.0) License. This license lets others distribute, remix, tweak, and build upon your work, even commercially, as long as they credit the author for the original creation. You must give appropriate credit, provide a link to the license, and indicate if changes were made. N-Methylaniline 0.96520 t 2174 Radha Sirija et al. Asian J. Chem.