Determination and modeling of activity coefficients of the ionic liquid 1-ethyl-3-methylimidazolium chloride in the (water + formamide) mixed solvent system at 298.2 K

► In this article for the first time, thermodynamic study of ionic liquids using potentiometric measurements has been reported. ► This work has been carried out with self made electrodes. ► Thermodynamic study of (|[EMIm]Cl + formamide + water) system has been performed at T = 298.2 K. ► The Pitzer model has been used to calculate the values of thermodynamic properties for under investigated system.