Investigation on thermodynamic properties and spectroscopic studies of binary mixtures of 1, 2, 4-trichlorobenzene with alkyl acetates (C1-C5) at T = (303.15 to 318.15) K

Abstract The measurements of experimental densities (ρ) and speeds of sound (u) of binary mixtures of 1, 2, 4-trichlorobenzene (1,2,4-TCB) with alkyl acetates namely methyl acetate, ethyl acetate, propyl acetate, butyl acetate and pentyl acetate have been done over the entire composition range at four different temperatures (T = 303.15, 308.15, 313.15 and 318.15 K) and pressure (P = 0.1 MPa). The intermolecular interactions present in these mixtures were briefly explained through the calculated excess molar volume ( V m E ), excess isentropic compressibility ( κ S E ) and excess speeds of sound ( u E ). The ideal and excess parameters were correlated with Redlich-Kister polynomial equation. Different theoretical models such as PFP theory, CFT and FLT have been used to analyze the experimental results of V m E and u values respectively. The strength of intermolecular interactions between the component molecules have been confirmed using the excess properties and the results were further analyzed with FT-IR spectroscopic technique.