Excess molar enthalpies HE of ternary mixtures of (methanol+ethanol+1-propanol or 2-propanol) at 298.15 K

The excess molar enthalpies HE of the liquid mixtures of (methanol+ethanol+1-propanol) and (methanol+ethanol+2-propanol) have been measured at 298.15 K and atmospheric pressure using a flow microcalorimeter. The experimental HE are used to test the suitability of an extended version of the UNIQUAC associated-solution model with binary parameters alone. The model requires solvation equilibrium constants for alcohols not to be the geometric mean of the self-association constants to provide better results.