Question: Distillation involves separating two or more components in a mixture based on their volatilities. A 1000 kg/h stream containing 50 wt. % benzene and 50

Distillation involves separating two or more components in a mixture based on their volatilities.

A 1000 kg/h stream containing 50 wt. % benzene and 50 wt. % toluene is fed to a distillation column to obtain a stream rich in benzene at the top (called distillate), and a stream rich in toluene at the bottom (referred to as bottoms).

Ninety percent (90 %) of the benzene fed to the column (that is, benzene in the feed to the column) is recovered in the distillate (the top stream rich in benzene), with a purity of 99 wt. % benzene.

Calculate:

(i) The mass flow rates and composition of the two product streams (that is the distillate and the bottoms)

(ii) The molar flow rates and composition of the two product streams (that is the distillate and the bottoms)

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