= We are feeding 100 kmol/h of a mixture that is 28 mol% n-butane and 72 mol% n-hexane to a flash drum. We operate with V/F = 0.42 and Tdrum = 100C. Use Raoult's law to estimate K values from vapor pressures. Use Antoine's equation to calculate vapor pressure, B log.(VP) = A - (T+C) where VP is in mm Hg and T is in C. n-butane: A = 6.809, B = 935.86, C = 238.73 n-hexane: A = 6.876, B = 1171.17, C = 224.41 Find pdrum, Xi and Yi = 1 = =