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At 300 K, vapour pressure of pure benzen...

At `300 K`, vapour pressure of pure benzene and pure toluene are `100mm` and `30 mm` of Hg respectively. Also benzene and toluene is prepared by mixing `3.0` moles of toluene in `2.0` moles of benzene at `300 K`. Anser the following questions:
If vapours which is in equilibrium with the solution is condensed, mole fraction of benzene in the first drop of liquid formed will be

A

`(9)/(29)`

B

`(20)/(29)`

C

`(11)/(29)`

D

`(18)/(29)`

Text Solution

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The correct Answer is:
B, C, D
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Knowledge Check

  • At 300 K , vapour pressure of pure benzene and pure toluene are 100mm and 30 mm of Hg respectively. Also benzene and toluene is prepared by mixing 3.0 moles of toluene in 2.0 moles of benzene at 300 K . Anser the following questions: If the given solution is distilled by lowering the external pressure at constant 300 K , what will be the mole fraction of benzene in the last drop of liquid condensed ?

    A
    `(3)/(5)`
    B
    `(6)/(5)`
    C
    `(1)/(3)`
    D
    `(1)/(6)`

  • The vapour pressure of pure benzene and toluene are 160 and 60 mm Hg respectively. The mole fraction of benzene in vapour phase in contact with equimolar solution of benzene and toluene is :

    A
    0.073
    B
    0.027
    C
    0.27
    D
    0.73

  • The vapour pressures of pure benzene and toluene are 160 and 60mm Hg respectively. The mole fraction of benzene is vapour phase in contact with equimolar solution of benzene and toluene is

    A
    `0. 0 73`
    B
    `0. 0 27`
    C
    `0. 27`
    D
    `0. 73`