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The relative lowering in vapour pressure...

The relative lowering in vapour pressure is proportional to the ratio of number of

A

solute molecules to solvent molecules

B

solvent molecules of solute molecules

C

solute molecules to the total number of molecules in solution

D

solvent molecules to the total number of molecules in solution

Text Solution

Verified by Experts

The correct Answer is:
C
`(p^@-p_s)/p^@=n_2/(n_1+n_2)`
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Relative Lowering Of Vapour Pressure

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Knowledge Check

  • Relative lowering of vapour pressure

    A
    is a property of solute
    B
    is a property of solute as well as solvent
    C
    is a property of solvent
    D
    is a colligative property

  • Unit of lowering of vapour pressure is

    A
    atm
    B
    `Nm^(-1)`
    C
    Unitless
    D
    `Nm^(2)`

  • Statement The vapour pressure of 0.45 molar urea solution is more than that of 0.45 molar solution of sugar. Explanation Lowering of vapour pressure is directly proportional to the number of species present in the solution.

    A
    `S` is correct but `E` is wrong.
    B
    `S` is wrong but `E` is correct.
    C
    Both `S` and `E` are correct and `E` is correct explanation of `S`.
    D
    Both `S` and `E` are correct but `E` is not correct explanation of `S`.

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