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Question
Assertion: Osmotic pressure of a dilute solution is inversely proportional to its concentration provided temperature remains constant.
Reason: Osmotic pressure is a colligative property and depends upon the number of moles of solute dissolved in a definite volume of the solution.
Options
If both Assertion and Reason are CORRECT and Reason is the CORRECT explanation of the Assertion.
If both Assertion and Reason are CORRECT but Reason is not the CORRECT explanation of the Assertion.
If Assertion is CORRECT but Reason is INCORRECT.
If Assertion is INCORRECT but Reason is CORRECT.
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Solution
If Assertion is INCORRECT but Reason is CORRECT.
Explanation:
The assertion is incorrect because osmotic pressure is directly proportional, not inversely, to the concentration of the solution at constant temperature, as per the equation π = CRT. However, the reason is correct; osmotic pressure is a colligative property and depends on the number of solute particles in a given volume.
