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Benzene and toluene form nearly ideal so...

Benzene and toluene form nearly ideal solutions.At `20^@C`, the vapour pressure of benzene is 75 torr. The partial vapour pressure of benzene at`20^@C` for a solution containing `78g`benzene and `46g`touene is torr is

A

`50`

B

`25`

C

`375`

D

`53.5`

Text Solution

Verified by Experts

The correct Answer is:
A
`P'_(A)=P_(B)^(@)X_(B)`
`=75xx((78)/(78))/((78)/(78)+(46)/(92))=75xx(1)/(1+(1)/(2))`
`75xx(2)/(3)=50`
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Knowledge Check

  • Benzene and toluene form nearly ideal solutions. At 20^(@) C, the vapour pressure of benzene is 75 torr. The partial vapour pressure of benzene at 20^(@) C for a solution containing 78 g of benzene and 46 g of toluene in torr is :

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    50
    B
    25
    C
    37.5
    D
    53.5

  • Benzene and toluene form nearly ideal solutions. At 20 ^@C , the vapour pressure of benzene is 75 torr and that of toluene is 22 torr. The partial vapour pressure of benzene at 20 ^@C for a solution containing 78 g of benzene and 46 g of toluene in torr is

    A
    50
    B
    25
    C
    37.5
    D
    53.5

  • Benzene and toluene form nearly ideal solutuions. At 20^(@)C , the vapour pressure of benzene is 75 torr and that of toulene is 22 torr. The partial vapour pressure of benzene at 20^(@)C for a solution containing 78g of benzene and 46g of toluene in torr is

    A
    50
    B
    25
    C
    37.5
    D
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