Thermodynamic investigations of 1-ethyl-3-methylimidazolium tetrafluoroborate and cycloalkanone mixtures

The densities, ρ, speeds of sound, u, and heat capacities, (C _P)_mix, for binary 1-ethyl-3-methylimidazolium tetrafluoroborate (1) + cyclopentanone or cyclohexanone (2) mixtures within temperature range (293.15–308.15 K) and excess molar enthalpies, H ^E, at 298.15 K have been measured over the entire composition range. The excess molar volumes, V ^E, excess isentropic compressibilities, ( kappa_{text{S}}^{text{E}}, ) and excess heat capacities, ( C_{text{P}}^{text{E}}, ) have been computed from the experimental results. The V ^E, ( kappa_{text{S}}^{text{E}} ) , H ^E, and ( C_{text{P}}^{text{E}} ) values have been calculated and compared with calculated values from Graph theory. It has been observed that V ^E, ( kappa_{text{S}}^{text{E}} ) , H ^E, and ( C_{text{P}}^{text{E}} ) values were predicted by Graph theory compare well with their experimental values. The V ^E, ( kappa_{text{S}}^{text{E}}, ) and H ^E thermodynamic properties have also been analyzed in terms of Prigogine–Flory–Patterson theory.