AIIMS 2017 Chemistry Non-ideal Solutions Assertion Reason Question
In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct answer out of the following choice.
Assertion (A): and for non-ideal solution with +ve deviation is zero.
Reason (R): A-B interaction is more than that between A-A and B-B.
Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true but Reason is not the correct explanation of Assertion
Assertion is true but Reason is false.
Both Assertion and Reason are false
Correct Answer
Detailed Explanation
In a non-ideal solution, the enthalpy of mixing (ΔHₘᵢₓ) can be either less than or greater than zero, depending on the interactions between the components. If the interactions between like molecules (A⁻A and B⁻B) are stronger than those between unlike molecules (A⁻B), the enthalpy of mixing will be positive, indicating endothermic behavior. Conversely, if A⁻B interactions are stronger, ΔHₘᵢₓ will be negative, indicating exothermic behavior. The volume of mixing (ΔVₘᵢₓ) similarly varies based on the interactions, leading to the conclusion that both statements in the question are false, validating option C. Other options are not relevant as they do not provide alternative answers or explanations.
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