Thermodynamic studies on the structure of iso-dielectric binary mixtures of methanol with ethylene glycol, acetonitrile, nitrobenzene and nitromethane

Abstract

The relative partial molal enthalpies of component solvents have been measured at 25 °C in CH₃OH–(CH₂OH)₂, CH₃OH–CH₃CN, CH₃OH–C₆H₅NO₂ and CH₃OH–CH₃NO₂ binary mixtures using an LKB-2277 microcalorimeter, and the molar excess enthalpies have been determined. The structure of binary mixtures is discussed by calculating local mole fractions around an added component solvent based on derived non-random two-liquid type expressions.