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Assertion : Molarity of a solution in li...

Assertion : Molarity of a solution in liquid state changes with temperature.
Reason : The volume of a solution changes with change in temperature.

A

Assertion and reason both are correct statements and reason is correct explanation for assertion.

B

Assertion and reason both are correct statements but reason is not correct explanation for assertion.

C

Assertion is correct statement but reason is wrong statement.

D

Assertion and reason both are incorrect statements.

Text Solution

Verified by Experts

The correct Answer is:
A
Explanation : (i) Strength of a solution in terms of .Molarity (M). is represents the number of moles of the solute dissolved per litre of solution, i.e.,
Molarity `= ("No. of moles of solute component")/("Volume of solution in litres")`
(ii) Since volume of a liquid varies with changes of temperature, the volume of solution would also change while the number of moles of solute present in it will remain the same (or unchanged). This therefore, would affect the molarity of the solution.
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Knowledge Check

  • Which of these changes with temperature ?

    A
    Molality
    B
    Molarity
    C
    Mol fraction
    D
    % w/w

  • Which of the following is change with temperature ?

    A
    Molality
    B
    % W/W
    C
    Formality
    D
    Mole fraction

  • Which of the following do not change with temperature ?

    A
    % w/v
    B
    Molality
    C
    Density
    D
    Molarity

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