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    The concentration of isobutene in the overhead product is 4.8 mole %, and the concentration of propane in the bottoms is 0.7 mole %. Calculate the moles of the various components in the overhead and bottoms per 100 moles of feed.

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    https://brainmass.com/chemistry/physical-chemistry/mass-balance-15278

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    The following feed to a distillation column is separated into an overhead product that contains nothing boiling higher than isobutene and bottoms that contain nothing boiling lower than propane.

    Feed Component Mole %
    Ethylene 1.9
    Ethane 2.1
    Propylene 5.2
    Propane 14.8
    Isobutane 25.0
    n-Butane 34.0
    n-Pentane 17.0
    100.0

    The concentration of isobutene in the overhead product is 4.8 mole %, and the concentration of propane in the bottoms is 0.7 mole %. Calculate the moles of the various components in the overhead and bottoms per 100 moles of feed.

    Solution.

    Overhead, concentration of Isobutane, 4.8 mol %

    Ethylene 1.9, mol %
    Ethane, 2.1 ...

    Solution Summary

    This problem shows how to calculate moles in various parts of a distillation process.

    $2.49

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