By measuring the equilibrium between liquid and vapour phases of a solution at 30°c at 1.00 atm, it was found that xa = 0.220 when ya = 0.314. 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: pa = 73.0 kpa and pb = 92.1 kpa. (xa is the mole fraction in the liquid and ya the mole fraction in the vapour.)