2.(1) The toluene-acetic acid mixture forms an azeotrope containing 62.7%(mol) toluene and having a minimum boiling point of 378.6K at 101.3kPa. The vapour pressure data are: 1 The normal boiling point of toluene and acetic acid are respectively 383.9K and 391.7K. (a) Calculate the van Laar constants A and B (b) Plot ln1 and ln2 as ordinate against mole fraction of toluene. (2) Under atmospheric pressure, the acetone-chloroform azeotrope boils at 337.8K and contains 33.5%(mol) acetone. The vapour pressures of acetone and chloroform at 337.8K are respectively 132.62kPa and 113.96kPa. (a) Calculate the composition of the vapour in equilibrium with a liquid analysing 11.1% (mol) acetone. How does it compare with the experimental value of 6.5% acetone in the vapour? (b) What is the total pressure at this condition