When exactly of liquid A and of liquid B are mixed to form a non-ideal solution exhibiting a confirm — Solutions and Colligative Properties Chemistry Question

💡 Solution & Explanation

For a non-ideal solution showing a negative deviation, the A-B attractive forces are stronger than the pure A-A and B-B forces. This pulls the molecules closer together, resulting in a volume contraction. Thus, $\Delta V_{mix} < 0$, meaning the final volume will be less than the sum of the pure volumes ($< 200\text{ mL}$).