Comments on ‘Prediction of internal pressure of binary liquid mixtures using Flory's statistical theory’

Abstract

A. Ali and M. Tariq ( J. Chem. Res., 30, 2006, 261) have reported the prediction of internal pressure of binary liquid mixtures using Flory's statistical theory. It is now shown that the Ali–Tariq approach to calculate thermal expansion coefficient αp and isothermal compressibility κT for both organic liquids and liquid mixtures, is totally wrong, misleading and introduces errors in thermodynamic data. It should also be emphasised that once the correct expressions for calculating Flory's interaction parameter X12 are known, one should use only those expressions to derive X12 in the prediction of any thermodynamic property of liquid mixtures.