Molar and partial molar thermodynamic functions of [BMIm]BF₄/water mixture (Gibbs free energy, entropy and enthalpy)

Anomalous Dependence of Translational Diffusion on the Water Mole Fraction for Solute Molecules Dissolved in a 1-Butyl-3-methylimidazolium Tetrafluoroborate/Water Mixture

“…Diffusion coefficients are generally discussed in relation to the SE equation (eq ), as mentioned in the Introduction, with viscosity variations associated with the addition of water contributing to variations in the diffusion coefficient. The viscosities of [C 4 mim]­BF 4 /water mixtures have been reported by several groups at several temperatures and water mole fractions. , The viscosities of the neat [C 4 mim]­BF 4 and of the mixture with a high water mole fraction can vary by two orders of magnitude at 25 °C (see Table S1). We interpolated the data to determine the viscosities of the solutions used in the diffusion experiments.…”

“…4,22 The viscosities of the neat [C 4 mim]BF 4 and of the mixture with a high water mole fraction can vary by two orders of magnitude at 25 °C (see Table S1). We interpolated the data 22 to determine the viscosities of the solutions used in the diffusion experiments. Figure 5b shows the relationship between T/η and the diffusion coefficient, which reveals that both diffusion coefficients increase with decreasing viscosity up to an x w of 0.54, above which the viscosity dependences of DPA and DPCP differ.…”

“…The viscosities of [C 4 mim]BF 4 /water mixtures have been reported by several groups at several temperatures and water mole fractions. 4,22 The viscosities of the neat [C 4 mim]BF 4 and of the mixture with a high water mole fraction can vary by two orders of magnitude at 25 °C (see Table S1). We interpolated the data 22 to determine the viscosities of the solutions used in the diffusion experiments.…”

“…On the other hand, the effects of small amounts of ILs in water are of interest to many chemists in relation to how the salt affects the water structure. Various spectroscopic methods, such as NMR and IR spectroscopy, X-ray diffractometry, and neutron scattering experiments have been used to examine IL/water mixtures, − and molecular dynamics simulations and thermophysical calculations have been employed to elucidate their structures and dynamics. − …”

Separation potential of 1,5-pentanediol-based deep eutectic solvent: Infinite dilution activity coefficients and excess thermodynamic data

“…The obtained partial molar Gibbs free energy values are positive for all the selected alkanes, alkenes, and alkynes as well as their corresponding cyclic compounds, whereas they are negative for all selected aromatics as well as for all the selected polar compounds, including water. These values are related to the properties of ideal solution, and they result from the differences of interactions between like and unlike molecules [ [60] , [61] , [62] ]. Moreover, the negative partial molar Gibbs free energy values for alcohols, ketones, and water suggest the formation of intermolecular hydrogen bonds and dipole forces, respectively, with the investigated DES [ 28 , 51 , 63 ].…”