In a binary solution showing a strong positive deviation from Raoult's law, if the total vapour pres — Solutions and Colligative Properties Chemistry Question

💡 Solution & Explanation

Positive deviation means the total vapour pressure is greater than predicted by Raoult's law ($P_{Total} > P_A^0 X_A + P_B^0 X_B$). This happens because A-B interactions are weaker than A-A and B-B interactions, which makes it easier for molecules of both A and B to escape into the vapor phase compared to their pure states.