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Prediction of Heat of Mixing from Internal Pressure Data

Abstract Excess enthalpies (HE m) and excess heat capacities (CE p) of three binary liquid mixtures comprising dimethylformamide, acetonitrile and benzene have been evaluated from internal pressure data obtained from three different approaches. The results obtained have been compared with the experimental HE m and CE p values determined by Miyanaga et al. [1]. HE m values evaluated through density, viscosity and ultrasonic velocity data [2] show anomalous behaviour. A critical review has been given.