Assertion :Molarity of a solution does not depend upon temperature whereas molality depends. Reason: Molarity and molality both depend only on the number of moles of solute particles.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is D Both Assertion and Reason are incorrect
Molarity is a function of volume which is a function of temperature as volume changes with temperature. But molality depends on the mass of solute and solvent which are independent of temperature.

Molarity is number of moles per liter volume of the solution
and molality is number of moles of solute particles dissolved in per kg mass of solvent.
Both Assertion and Reason are incorrect

Thus, option $D$ is correct.

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