Question

Two liquid on mixing produce warm solution. which type of deviation from roult's law it will show?

Answer 1

If warm solution is produced then negative deviation from Raoult's law is shown.

Answer 2

On mixing A and B , the solution becomes warm.

This means heat released in formation of new bonds between A and B molecules is more than the heat absorbed for the breaking of molecules of A and B .

Therefore , the vapour pressure of the solution is reduced and thus the mixture shows negative deviation from Roult's law .