This document discusses different types of azeotropes: - An azeotrope is a mixture of liquids that cannot be separated by simple distillation as the vapor has the same composition as the liquid. - A minimum boiling azeotrope has a boiling point lower than its constituent liquids. Repeated distillation of such a mixture cannot produce a distillate richer in one component than the azeotrope composition. - A maximum boiling azeotrope has a boiling point higher than its constituent liquids. Repeated distillation of such a mixture results in distillates moving away from the azeotrope composition and residues moving towards it.