60 An ideal mixture of two liquids A and B is put in a

Last updated: 7/3/2023

60 An ideal mixture of two liquids A and B is put in a cylinder containing piston Piston is pulled out isothermally so that the volume of liquid decreases but that of vapours increases Negligibly small amount of liquid was left and mole fraction of A in vapour is 0 4 If P 0 4 and P 1 2 at at the experimental temperature which of the following is the total pressure at which the liquid is almost evaporated 1 0 22 atm 3 0 667 atm 2 0 431 atm 4 1 atm