1.

Assertion. One molar aqueous solution has always higher concentration than one molal. Reason. The molality of a solution depends upon the density of the solution whereas molarity does not.

Answer»

If both ASSERTION and reason are true, and reason is the true explanation of the assertion.
If both assertion and reason are true, but reason is not the true explanation of the assertion.
If assertion is true, but reason is false.
If both assertion and reason are false.

Solution :Correct explanation. One molar AQUEOUS solution CONTAINS one mole of the SOLUTE in 1000 mL of the solution whereas one molal solution contains one mole of the solute in 1000 g of the solvent. Thus, solvent present in one molar solution is LESS than 1000 mL. Hence, concentration is more.


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