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Assertion :- If a liquid solute more vol...

Assertion :- If a liquid solute more volatile than the solvent is added to the solvent, the vapour pressure of the solution may increase i.e., `p_(s)gt p^(@)`.
Reason :- In the presence of a more volatile liquid solute, only the solute will form vapours and solvent will not.

A

If both assertion and reason are true and the reason is the correct explanation of the assertion.

B

If both assertion and reason are true but reason is not the correct explanation of the assertion.

C

If assertion is true but reason is false.

D

If the assertion and reason both are false.

Text Solution

Verified by Experts

The correct Answer is:
C
Both the solute and solvent will form the vapour but vapour phase will become richer in the more volatile component.
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When non-volatile solute is assed to a pure solvent, the:

Each question contains STATEMENT-I(Assertion) and STATEMENT-2(Reason).the statement carefully and mark the correct answer accoring to the instrution given below: STATEMENT - 1 : if a liquid solute more volatile than the solvent is added to the solvent, the vapour pressure of the solution is greater than vapour pressure of pure solvent. STATEMENT - 2 : Vapour pressure of solution is eqeal to vapour pressure of sovent.

When one mole of non-volatile solute is dissolved in three moles of solvent, the vapour pressure of the solution relative to the vapour pressure of the pure solvent is -

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Knowledge Check

  • When non-volatile solute is assed to a pure solvent, the:

    A
    vapour pressure of the solution becomes lower than the vapour pressure of the pure solvent
    B
    rate of evaporation of solvent is reduced
    C
    solute does not affect the rate of condensation
    D
    none of these

  • Each question contains STATEMENT-I(Assertion) and STATEMENT-2(Reason).the statement carefully and mark the correct answer accoring to the instrution given below: STATEMENT - 1 : if a liquid solute more volatile than the solvent is added to the solvent, the vapour pressure of the solution is greater than vapour pressure of pure solvent. STATEMENT - 2 : Vapour pressure of solution is eqeal to vapour pressure of sovent.

    A
    If both the statements are TURE and STATEMENT-2 is the correct explanation STATEMENT-1
    B
    If both the statements are TURE but STATEMENT-2 is NOT the correct explanation STATEMENT-1
    C
    If STATEMENT-1 is TURE and STATEMENT-2 is FALSE
    D
    If STATEMENT-1 is FA,SE and STATEMENT-2 is TRUE

  • When one mole of non-volatile solute is dissolved in three moles of solvent, the vapour pressure of the solution relative to the vapour pressure of the pure solvent is -

    A
    `1/3`
    B
    `1/4`
    C
    `3/4`
    D
    1