mass transfer

b) A continuous fractionating column is to be designed for separating 10,000 kg per hour of a liquid mixture containing 40 mole percent methanol and 60 mole percent water into an overhead product containing 97 mole percent methanol and a bottom product having 98 mole percent water. A mole reflux ratio of 3 is used. Calculate the following: i. Moles of overhead product obtained per hour. ii. Minimum reflux ratio (Rmin). iii. Number of ideal plates (N), minimum number of stages required (Nmin). iv. Location of the feed plate if the feed is at its bubble point. v. Locate the point corresponding to the composition of liquid and vapor streams passing each other between stages 2 and 3 from the top, Equilibrium data Methanol water system (see attached plot)