Question: A distillation column is used to separate a saturated liquid feed of two components A and B in which the mole fraction of A is

A distillation column is used to separate a saturated liquid feed

A distillation column is used to separate a saturated liquid feed of two components A and B in which the mole fraction of A is 0.40. Samples withdrawn from three successive plates between the feed plate and the total condenser have the following composition: Plate Vapour Liquid YA Top (T) 0.680 T-1 0.740 0.600 T-2 0.679 0.510 It is assumed that there is constant molar overflow. Determine (i) the reflux ratio at which the column is operating; (ii) the distillate composition

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