ENTHALPIES OF WATER PLUS METHANOL MIXTURES BETWEEN 180K AND 320K

Enthalpy increments relative to 298.15 K were measured using a thermoe lectric flow calorimeter for six water + methanol mixtures between 180 K and 320 K. Excess Gibbs energies were derived as a function of temp erature and composition from the measured enthalpies and vapor-liquid equilibrium results reported in die literature. The excess Gibbs energ ies are calculated relative to hypothetical liquid water below 273.15 K; the properties of the hypothetical liquid also are reported.