A distillation column is separating 100 kmol/h of saturated vapor feed that is 30 mol% ethanol, 25 mol% i-propanol, 35 mol% n-propanol, and 10 mol% n-butanol at a pressure of 1.0 atm. We want a 98.6% recovery of i-propanol in the distillate and 99.2% recovery of n-propanol in the bottoms. The column has a total condenser and a partial reboiler. The distillate flow rate in kmol/hr is 0.45 , the bottoms flow rate in kmol/hr is 0.77 , the molar fraction of i-propanol in the distillate is 55 , and the molar fraction of n-propanol in the bottoms is