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A two-stage flash distillation unit is used to separate a mixture of 1,2-dichloroethane (DCE) and 1-propanol at 1atm. A feed solution of 35mol% DCE enters

A two-stage flash distillation unit is used to separate a mixture of 1,2-dichloroethane (DCE) and 1-propanol at 1atm. A feed solution of 35mol% DCE enters the first stage at 50kmol/h. The temperatures of the first and second stage are 93C and 92C, respectively. a) Determine the expected outlet stream concentrations (mole fraction) and flowrates (kmol/h). b) The actual second stage vapour concentration is 67 mol\% DCE. Why might this be different from your calculated value

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