Question: 1 A water solution containing 0 . 0 0 5 mole fraction of benzoic acid is to be extracted by pure toluene as the solvent.

1 A water solution containing 0.005 mole fraction of benzoic acid is to be extracted by pure toluene as the solvent. If the feed rate is 100molh-1 and the solvent rate is 100molh-1, find the number of equilibrium stages required to reduce the water concentration to 0.0001 mole fraction benzoic acid. Operation is isothermal and countercurrent. The equilibrium represented by: mole fraction benzoic acid in water =0.446** mole fraction benzoic acid in toluene.
Compare the McCabe-Thiele method with the analytical Kremser method.
1 A water solution containing 0.005 mole fraction of benzoic acid

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