Question

Given reason:

On mixing liquid X and liquid Y, the volume of the resulting solution decreases. What type of deviation from Raoult’s law is shown by the resulting solution? What change in temperature would you observe after mixing liquids X and Y?

Answer 1

When combining X and Y, a reduction in solution volume indicates a decrease in interactions among X-X and Y-Y molecules, accompanied by an increase in interactions between X and Y molecules. This results in a negative deviation from Raoult’s law. As vapor pressure diminishes, the boiling point of the solution rises. The solution temperature rises, indicating that ΔH is negative.

Therefore, it is an exothermic reaction.