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    Distilling toluene and benzene - Application of Phase rule

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    When distilling toluene and benzene under equilibrium conditions can equilibrium be maintained if a) pressure is changed and if b) pressure and temp are changed? Explain by phase rule

    © BrainMass Inc. brainmass.com December 24, 2021, 4:59 pm ad1c9bdddf
    https://brainmass.com/chemistry/experimental-design-and-methods-in-chemistry/distilling-toluene-benzene-application-phase-rule-20524

    SOLUTION This solution is FREE courtesy of BrainMass!

    Gibbs' phase rule can be expressed as:

    F = c - p + 2

    where, F is the number of degrees of freedom, c is the number of components in the system, and p is the number of phases in the system.

    Here we are having a nearly ideal mixture of toluene and benzene. Therefore we have C = 2, p = 2 (one liquid and one vapour)

    F = 2 ie, at any given pressure and temperature, composition of each phase is fixed (by the compositions of liquid and vapor at each end of a tie line).
    Thus there is only one possible pressure for each temperature and the answer is yes with b.

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    © BrainMass Inc. brainmass.com December 24, 2021, 4:59 pm ad1c9bdddf>
    https://brainmass.com/chemistry/experimental-design-and-methods-in-chemistry/distilling-toluene-benzene-application-phase-rule-20524

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