Assertion (A): \( \Delta_{\text{mix}} H \) for an ideal solution is not equal to zero.
Reason (R): A–B interactions in an ideal solution are the same as between A–A and B–B interactions.
Show Hint
For an ideal solution, \( \Delta_{\text{mix}} H = 0 \) and obeys Raoult’s Law.
Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
Assertion (A) is true, but Reason (R) is false
Assertion (A) is false, but Reason (R) is true.
Show Solution
The Correct Option isD
Solution and Explanation
In an ideal solution, the enthalpy of mixing (\( \Delta_{\text{mix}} H \)) is zero, as the intermolecular forces between A–B are equivalent to those between A–A and B–B. The assertion that it is not equal to zero is therefore false. The provided reason accurately defines an ideal solution.