Question

Two statements are given below:
Statement - I: Liquids A and B form a non-ideal solution with positive deviation. The interactions between A and B are weaker than A-A and B-B interactions.
Statement - II: For an ideal solution, \( \Delta H_{\text{mix}} = 0 \), \( \Delta V_{\text{mix}} = 0 \).
The correct answer is

• A. Both Statements - I and Statement - II are correct
• B. Both Statements - I and Statement - II are not correct
• C. Statement - I is correct but Statement - II is not correct
• D. Statement - I is not correct but Statement - II is correct

Hint:

For non-ideal solutions with positive deviation, A and B have weaker interactions than A-A and B-B, resulting in a positive heat of mixing.

Answer 1

The Correct Option is A

- Statement - I is correct because when A and B form a non-ideal solution with positive deviation, it implies that the interactions between A and B are weaker than the A-A and B-B interactions. 

- Statement - II is also correct for an ideal solution where both enthalpy and volume changes are zero.