Question

Please show your work step by step.

Ethanol is often used as a fuel additive, but to function in most engines, the ethanol must be ve anol and water above 90 mole % ethanol because at this ry pure and concentration the vapor and the liquid phases of this mixture have the same composition this effect, benzene is often added to the mixture. The distillation column then separates the mixture into a very nearly pure ethanol stream, and a mixture of benzene and water. The benzene may from the water, and then recycled to use again in the ethanol-water distillation . To get around A company wishes to distill a 0.820 mole fraction ethanol (0.180 mole fraction water) solution. To aid in the distillation process, a 0.950 mole fraction benzene (0.050 mole fraction water) mixture containing fresh benzene and a recovered benzene solution is added. The plant wishes to produce 76.0 moles/hr of a 0.999 mole fraction ethanol (0.001 mole fraction benzene) mixture from a distillation column. The other product from the distillation is a water and benzene mixture. This mixture is sent to a separator which produces a 10.0 mol/hr stream of water, and a 0.9300 mole fraction benzene (0.0700 mole fraction water) mixture, some of which is recycled back to the fresh benzene stream. Label the process flow diagram below. Label any quantites as "unknown" if you have to performa calculation to obtain the numeric value. DO NOT LEAVE ANY ANSWER SPACE BLANK. "et" is short 2 for ethanol, "b is short for benzene, and 'w" is short for water mol/hr

Answer 1

pos 0 eiorol has n on enty in fees and e one eit in oduc mkngn cuerall ehanol halonce.oe got e ste oafeo-999xa6 0.820 S.2u o-820 Le peond on 6-65 (o o 2o0)

0 osa5 moles h8 moking ocealfnme aana (96oxo.ool) 4 (95xo93) 88.39) Aree erçene 88-926 moles sadion scutto 88 426)+C43000) x (Recyee)- 88 426-84 0045Retyde 093 eutle

44213Reyde (2) Recule 13