Question: 2. A distillation column with a partial reboiler and a total condenser is being used to separate a mixture of benzene, toluene and cumene. The

2. A distillation column with a partial reboiler and a total condenser is being used to separate a mixture of benzene, toluene and cumene. The feed is 40 mole\% benzene, 30 mole\% toluene and 30 mole\% cumene. We desire 98% recovery of the benzene in the distillate and 95% recovery of the toluene in the bottoms. Reflux is returned as saturated liquid. Equilibrium can be represented as constant relative volatilities. Choosing toluene as the reference component, benzene=2.25 and cumene=0.21. i. Use Fenske equation to find the number of equilibrium stages required at ii. Use Fenske equation to calculate the recovery fraction of cumene in the total reflux. bottoms

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