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The relative lowering in vapour pressure...

The relative lowering in vapour pressure is:

A

`prop X_("solute")`

B

`prop (1)/(X_("solute"))`

C

`=X_("solute")`

D

`prop m`

Text Solution

Verified by Experts

The correct Answer is:
C
`(P^(@)-P_(s))/(P^(@)) = X_("solute")`
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Knowledge Check

  • The vapour pressure of methanol at certain temperature is 1 atm. By adding a small amount of ethyl acetate the vapour pressure of the solution is found to be 684 mm. The relative lowering of vapour pressure is

    A
    `0.1`
    B
    `0.9`
    C
    76
    D
    `0.694

  • At a certain temperature, the vapour pressure of water is 90 mm. At the same temperature the vapour pressure of a solution containing a non - volatile solute is 81 mm. The relative lowering of vapour pressure is

    A
    9
    B
    `0.9`
    C
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    D
    `0.1`

  • The relative lowering of vapour pressure is equal to the mole fraction of thesolute. This law is called

    A
    Henry's law
    B
    Raoult's law
    C
    Ostwald's law
    D
    Arrhenius law

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