Question

Assertion: 1 M solution of NaCl has a higher osmotic pressure than 1 M solution of glucose at the same temperature.

Reason: The number of particles present in 1 M NaCl solution are more than those present in 1 M glucose solution and osmotic pressure depends upon number of particles present in 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.

Answer 1

If both Assertion and Reason are CORRECT and Reason is the CORRECT explanation of the Assertion.

Explanation:

NaCl dissociates into two ions (Na⁺ and Cl⁻) in solution, effectively doubling the number of solute particles, while glucose does not dissociate. Since osmotic pressure is directly proportional to the number of solute particles, a 1 M NaCl solution has a higher osmotic pressure than a 1 M glucose solution. Therefore, both the assertion and reason are correct, and the reason correctly explains the assertion.