Journal du génie chimique et de la technologie des procédés
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Batch Determination of Excess Molar Variables for Butanol and Acetonitrile Binary Mixtures

Okoye O and Obi C

In this study, the experimental excess molar enthalpy, entropy and excess molar Gibb’s free energy changes for the binary mixtures of butanol and acetonitrile have been measured at 345 K by means of a bomb calorimeter. The binary experimental excess molar enthalpy and Gibb’s free energy values were correlated by means of the Liebermann-Fried solution theory model equation. The result showed that Liebermann-Fried solution theory model was able to closely represent the experimental excess molar enthalpy and excess molar Gibb’s free energy data for the binary system with reasonable accuracy. The correlated and predicted results for all thermodynamic quantities measured have been drawn on a Table and plotted as well. The plots obtained revealed that the mixture has strong attractive forces and therefore deviate negatively from Raoult’s line. This deviation will strongly help in the development and in-depth comprehension of thermal separation processes and molecular structures of fluid mixtures.