1. A continuous fractionating column is required to separate a binary mixture containing 0.25mole fraction of A into a top product of 0.9 mole fraction A, and a bottom product containing 0.05 mole fraction A. The feed is liquid at its boiling point. The vapour leaving the column is condensed but not cooled, and the reflux ratio is 8:1. The relative volatility (a) remains constant at 2.25 and the vapour and liquid equilibrium data are in the form \alpha=\frac{y(1-x)}{x(1-y)} a.the number of theoretical plates required; b. the position of the feed plate; C. the minimum reflux ratio for the system using the coordinates from the equilibrium-diagram. d. the minimum reflux ratio for the system using the Underwood equation. e. which will be the number of theoretical plates if the Murphree L- phase efficiency is80%;(40 marks)