By measuring the equilibrium between liquid and vapour phases of an acetone (a)–methanol (m) solution at 57.2°c at 1.00 atm, it was found that 400 0.x a = when 516 0.y a = . calculate the activities and activity coefficients of both components in this solution on the raoult’s law basis. the vapour pressures of the pure components at this temperature are: kpa p* a 105 = and kpa. p * m 5 73= . ( a x is the mole fraction in the liquid and a y the mole fraction in the vapour.)