The follows: physical constants of the nitric acid-water (HNO3 H2O) binary system are as

Temperature (T) boiling

HNO3 86C at 1 atm

H2O 100C at 1 atm

Azeotrope 121C at 1 atm

Mass composition of the azeotrope: 68% HNO3 32% H2O

i. Schematically represent the shape of the isobaric diagram characterising the liquid vapour equilibrium of the mixture

ii. Specify the ordinates and abscissas of the remarkable points

iii. Indicate the type of deviation.

iv. Using the diagram, discuss how a mixture containing 80% HNO3 can be purified to obtain 68% HNO3.

v. What would happen if you distil a mixture of 68% HNO3 32% H2O