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Heptane (A)-ethyl benzene (B) mixture containing 40% heptane as mole percent, 2000 kg/h flow rate It is fed to a distillation column operating continuously at atmospheric pressure, as mole percent. It separates into a head product containing 95% heptane and a base product containing 90% ethyl benzene. The feed stream is fed to the column as a liquid at its boiling point. Riflax in processing conditions Since the ratio is 2.5, by making the appropriate assumptions, we can determine the required theoretical rack number and the feeding rack find your location.