The physical constants of the water-ethanol (H2O C2H5OH) binary system are as follows:

Temperature (T) boiling H2O 100C at 1 atm C2H5OH 78.5C at 1 atm Azeotrope 78.2C at 1 atm Mass composition of the azeotrope: 95.6% C2H5OH 4.4% 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. What type of deviation is it?

iv. What would happen if you distil a mixture of 40% C2H5OH 60% H2O

v. What would happen if you distil a mixture of 95.6% C2H5OH 4.4% H2O

vi. Using the diagram, discuss how a mixture containing 40% ethanol can be purified to obtain 95% ethanol.