Once this composition, known as azeotrope
composition, has been achieved, the liquid and vapour have the same
composition, and no further separation occurs The solutions that show large negative deviation from Raoult’s law
form maximum boiling azeotrope at a specific composition Nitric acid
and water is an example of this class of azeotrope This azeotrope has
the approximate composition, 68% nitric acid and 32% water by mass,
with a boiling point of 393