Understanding Molecular Interactions in Methanol and m - Toluidine Mixtures Through Acoustical and Viscosity Analysis

Bhanudas Narwade

Abstract: The viscosity (η), and Density (ρ) have been calculated for methanol, m-toluidine and their binary mixtures at room temperature. Ultrasonic Velocity (U) have been measured for pure methanol, m - toluidine and their binary mixtures using Ultrasonic interferometer at 2MHz frequency. Experimental data have been used to calculate some derived parameters such as adiabatic compressibility (β), acoustical impedance (Z), relaxation time (τ), free length (L_f) and free volume (V_f). Also, the excess parameters such as excess ultrasonic velocity ΔU, excess acoustical impedance (ΔZ), excess relaxation (Δτ), excess free length (ΔL_ff). These parameters have been evaluated and discussed in light of intermolecular interaction in these mixtures.

Keywords: Ultrasonic velocity, acoustic parameters, excess parameters