9.30 At T=60C the vapor pressure of methyl acetate is 1.126 bar, and the vapor pressure of methanol is 0.847 bar. Their mixtures can be described by the one-constant Margules equation Gex=Ax1x2withA=1.06RT where R is the gas constant and T is temperature in K. a. Plot the fugacity of methyl acetate and methanol in their mixtures as a function of composition at this temperature. b. The Henry's law coefficient Hi is given by the equation Hi=limxi0xiPi Develop an expression for the Henry's law constant as a function of the A parameter in the Margules expression, the vapor pressure, and composition. Compare the hypothetical pure component fugacity based on the Henry's law standard state witr that for the usual pure component standard state