Activity coefficients describe the nonideality of liquid mixtures and are essential for calculating equilibria. The activity at infinite dilution in binary particularly important as finite concentrations can be predicted based on their knowledge not only but also multicomponent mixtures. available experimental data these is readily accessible databases organized a matrix with rows representing ...

One of the most acute health and environmental concerns nowadays is 3Rs (Reduce, Reuse, Recycle) organic solvents. The existing technology used for solvent separation either expensive or inefficient, particularly in case azeotrope separation. Ionic liquids (ILs) have already shown potential liquid–liquid extraction solvents due to their high structural variability. However, which IL will be eff...

An important source of inefficiency in long-term debt contracts is the debt dilution problem, wherein a country or firm ignores the adverse impact of new borrowing on the market value of outstanding debt and, therefore, borrows too much and defaults too frequently. A commonly proposed remedy to the debt dilution problem is seniority of debt, wherein creditors who lent first are given priority i...

The influence of the cation's central atom in the behavior of pairs of ammonium- and phosphonium-based ionic liquids was investigated through the measurement of densities, viscosities, melting temperatures, activity coefficients at infinite dilution, refractive indices, and toxicity against Vibrio fischeri. All the properties investigated are affected by the cation's central atom nature, with a...

The aim of this study was to compare the solubility of selected volatile organic compounds in water and silicon oil using the simple static headspace method. The experimental design allowed equilibrium achievement within 30 – 60 minutes. Infinite dilution activity coefficients and Henry’s law constants for various organics representing esters, ketones, alkanes, aromatics, cycloalkanes and amine...

the protonation of different species of glycylisoleucine were studied in the ph range of 1.5 - 10 at25 °c using potentiometric technique. investigations were performed in sodium perchlorate andtetraethylammonium iodide as background electrolytes at i (0.1, 0.2, 0.3, 0.4, 0.5, and 0.6) moldm-3. the parameters based on the protonation constants were calculated, and their dependenceson ionic stren...

The density and viscosity values at T= (293.15 to 323.15) K for binary mixtures of nitromethane with 2-propanol, 2-butanol and 2-pentanol were measured over the entire composition range. From the experimental data, excess molar volumes, thermal expansion coefficients, excess thermal expansions, partial molar volumes at infinite dilution and deviations in viscosity were calculated. The results w...