Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

ABSTRACT

Thermodynamic properties are supportive in describing the structure and properties of solutions concerning, solute-solute and solvent-solvent interactions. With this regard; experimental values of densities (rho) , speeds of sound (u) and absolute viscosities (eta) of propyl, butyl and pentyl dicationic ionic liquids i.e. aqueous binary and [C(n)-DIL+ glycine + water] where (n = 3, 4, 5) i.e. ternary systems have been obtained at different temperatures at T = (293.15-313.15 K). The densities of DILs decrease with the increase in alkyl chain length having imidazolium cations with the rise in temperature. It may be due to the bulkiness of the longer alkyl chains prevents them from efficient close packing leading to a decrease in the density. The molecular interactions are discussed in terms of apparent molar volume, apparent molar isentropic compressibility, JonesDole coefficient of viscosity, hydration number (nh), thermal expansion coefficient supported with the partial molar volume of transfer, partial molar compressibility of transfer and transfer values of B-coefficient of DILs from water to 0.06 mol*kg-1 aqueous systems of glycine. These structural interactions for studied DILs-glycine pairs in water have been also discussed and interpreted by the thermal study and electrochemical study.