A mixture of 54.5 mol% benzene in chlorobenzene at its bubble point is fed continuously to the bottom plate of a column containing two theoretical plates. The column is equipped with a partial reboiler and a total condenser. Sufficient heat is supplied to the reboiler to give V/F = 0.855, and the reflux ratio LIV in the top of the column is kept constant at 0.50. Under these conditions, what quality of product and bottoms (xD, xB) can beexpected?

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EQUILIBRIUM DATA AT COLUMN PRESSURE, MOLE-FRACTION BENZENE * 0.100 0.200 0.300 0.400 0.500 0.600 0.700 0.800 y 0.314 0.508 0.640 0.734 0.806 0.862 0.905 0.943