Calculation of Excess Molar Volumes of Liquid Mixtures at High Pressures and Temperatures from Measurements at Ambient Conditions

Excess quantities are useful measures of the effects of molecular interactions onthermodynamic properties of liquid mixtures [1]. Measurements of excess molar volumes athigh temperatures and pressures are difficult and often consume a lot of chemicals and lots oftime. In fact, this study is continue of the previous paper [2]. In this study, the NRTL modelwas modified by expressing the interaction parameter of the model as a function oftemperature and pressure to improve the accuracy and ability of spontaneous correlation ofexperimental data at different pressures and temperatures.