mass transfer

16 An equimolal mixture of benzene and toluene is to be distilled in a plate column at atmospheric pressure. The feed, saturated vapor, is to be fed to the optimum plate. The distillate is to contain 98 mole\% benzene, while the bottoms is to contain 2 mole\% benzene. Using the Ponchon method and data below [Ind. Eng. Chem., 39, 752 (1947)], calculate: (a) Minimum reflux ratio (L/D). (b) The number of theoretical plates needed and the duties of the reboiler and condenser, using a reflux ratio (L/V) of 0.80 . (c) To which actual plate the feed should be sent, assuming an overall plate efficiency of 65%. Enthalnu dota t1 Atm tnt kDal