Thermodynamic and acoustic properties of binary mixtures of ethers. V. Diisopropyl ether or oxolane with 2- or 3-chloroanilines at 303.15, 313.15 and 323.15 K

Highlights: → We report excess properties of molar volumes, isentropic compressibilities, free lengths. → Four binary mixtures of diisopropylether or oxolane with 2- and 3-chloroanilines are studied. → Molecular interactions estimated qualitatively from magnitude of deviations in the properties. → The free volume and P* effects has significant contributions in excess properties. → The speeds of sound in mixtures were estimated with seven models. - Abstract: Densities ρ and speeds of sound u, of binary mixtures formed by 2-chloroaniline or 3-chloroaniline with diisopropyl ether or oxolane have been measured over the entire range of composition at a temperature of (303.15, 313.15 and 323.15 K) and atmospheric pressure. The ρ and u values were used to calculate isentropic compressibilities κS, Rao's molar sound functions R, intermolecular free lengths Lf, specific acoustic impedances Z, excess molar volumes VmE, excess isentropic compressibilities κSE, excess intermolecular free lengths LfE and excess specific acoustic impedances ZE. The results have been used to investigate molecular interactions and structural effects in these mixtures. The speed of sound in present mixtures has been estimated using several empirical and theoretical models to determine their relative predicting ability in terms of pure component properties.