x-y diagram for methanol/water at 1 atm 0.8 0.6 Ym (molefraction of methanol in vapour) 0.4 0.2 0 0.2 0.4 0.6 0.8 Xm (molefraction of methanol in liquid) 3) Calculate the relative volatility of methanol to water, Amw, for a binary mixture at a pressure of 1 atm, with a methanol mole-fraction of 0.9 in the liquid phase, using three methods; a) reading values from the chart above; b) assuming an ideal liquid; c) using the Margules equation for the liquid phase activity coefficients. Compare the results and explain your findings. = Data: Antoine coefficients (P in mmHg, Tin K, log to base e): Methanol: A = 18.588, B = 3626.6, C = -34.29 Water: A = 18.304, B = 3816.4, C = -46.13 Ethanol: A = 18.9119, B = 3803.98, C = -41.68 Margules parameters: Methanol-Water: Awm = 0.6174, Amw = 0.7279 Ethanol-Water: Awe = 0.7917, Aew = 1.6366