Investigating the Solvation Behavior of Some Lithium Salts in Binary Aqueous Mixtures of 1-Ethyl-3-methylimidazolium Tetrafluoroborate ([EMIM][BF4]) at Equidistant Temperatures (T=298.15, 303.15, 308.15, 313.15, 318.15) K

In the current work, measurements of density, as well as speed of sound, were made to analyze the solvation behavior of some lithium salts in binary aqueous mixtures of 1ethyl-3-methylimidazolium tetrafluoroborate ([EMIM][BF4]) at equidistant temperatures (T = 298.15, 303.15, 308.15, 313.15, 318.15) K and a pressure of 0.1 MPa. Various thermo-physical parameters like apparent and partial molar volumes (Vo and Vo0 ), apparent and partial molar isentropic compressions (Ko, S and 0 ), partial molar volume, and partial molar isentropic compression of transfer (Delta Vo0 and Delta Ko,0 S) were calculated from the experimental data. McMillan-Mayer theory was used to calculate pairwise (AB) and triplet interactions (ABB) from the calculated coefficients. Based on the calculated parameters, the presence and paramountcy of solute-solvent synergy particularly hydrophilic interactions over hydrophobic interactions have been found for both LiClO4 and LiI in binary aqueous mixtures of [EMIM][BF4]. Furthermore, Hepler's criterion has been employed to examine the potential of these salts as a structure maker/ breaker.