A mbture of di and tri-ethylamines containing 65 molew of the former is fat to a distillation column at a rate of 80kmol/h. The feed is at its bubble pbiet The column is to operate at atmospheric pressure and the top product shoud not have more than 5 mols of the less volatile. Also, not more than 2 of the diethylamine in the feed should be aliowed to leave at the bottom. The rahar to the column is a saturated liquid. Determine: (a) The number of plates if the actual reflux ratio is 1.5 (b) the number of theoretical plates if the reflux is 2 and the feed location. The equilibrium data at this pressure are given in the figures. A mbture of di and tri-ethylamines containing 65 molew of the former is fat to a distillation column at a rate of 80kmol/h. The feed is at its bubble pbiet The column is to operate at atmospheric pressure and the top product shoud not have more than 5 mols of the less volatile. Also, not more than 2 of the diethylamine in the feed should be aliowed to leave at the bottom. The rahar to the column is a saturated liquid. Determine: (a) The number of plates if the actual reflux ratio is 1.5 (b) the number of theoretical plates if the reflux is 2 and the feed location. The equilibrium data at this pressure are given in the figures