Modification of Connors-Wright Equation For Estimating Surface Tension of Ionic Liquid Mixtures

According to the considerable amount of increasing usage of ionic liquids as suitable non-volatile solvents in industry and due to unavailable experimental data of diverse and numerous ionic liquids, prediction of thermophysical properties these binary mixtures became a necessary topic, hence modeling of characteristics of ionic liquids has been considered by many investigators# this paper’s target is on the modeling of surface tension# surface tension is known as an applicable property in chemical fields and processes which it’s accurate estimation is more difficult than any other physical characteristics# in this work, the connors-wright equation is modified with applying activity instead of mole fraction in the model# for calculation, the activity coefficient of the components the nrtl and wilson models are used# 10 non-aqueous ionic liquid systemsare syudied and the results show that the connors-wright equation with nrtl activity coefficient model demonstrates the best results among the mentioned three equations with the average percent error of 0#426291 %#