A cólumi 19 equilit stages and a partial reboiler is being operated at total reflux to separate a mixture of ethylene dibromide and propylene dibromide. Ethylene dibromide is more volatile, and the relative volatility (a) is constant at a value of 1.80. We are measuring a distillate concentration that is 98.4mol% ethylene dibromide. The column has a total condenser and saturated liquid reflux, and CMO can be assumed. Use the Fenske equation to predict the bottoms composition (xâ).

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