Question

A and b on mixing gives a warm solution which type of deviation it shows

Answer 1

Negative Deviation -

When they are mixed then the resulting solution is a warm one.. So we can say that the process is endothermic and we know that whenever bond formation takes place heat is released and the more the heat is released, the more strong is the bonding.. so we can say that A-B interactions are more stronger than A-A and B-B interactions thus it will show negative deviation frm roults law...

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 .