Thermodynamic properties of binary systems containing hexafluorobenzene. Part 4.—Excess Gibbs free energies of the three systems hexafluorobenzene + benzene, touene, and p-xylene

摘要: The excess Gibbs free energy of the three binary systems hexafluorobenzene + benzene, toluene, and p-xylene have been measured in temperature range 30–70° using a static method. benzene system appears to be unique among solutions non-electrolytes that it forms double azeotrope at all experimental temperatures. All are believed form equimolar, intermolecular complexes liquid, as well solid, states. data analyzed yield values equilibrium constants enthalpies formation for complexing reaction.