(i) On mixing liquid X and liquid Y, 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 ?
(ii) What happens when we place the blood cell in water (hypotonic solution) ? Give reason.

Explanation

(i) On mixing Liquid X and Liquid Y, volume of the resulting solution decreases. Negative deviation shown by the resulting solution in which
`F_(X-Y)gtF_(X-X) and F_(Y-Y)`
Due to this there is decrease in the escaping tendency of X or Y molecules from the surface of solution. `DeltaH_(mix)` is (-)ve. Hence evolution of heat takes place. Hence temp of resulting solution increases. Consequently, the vapour pressure of the solution will be lower.
(ii) When we place the blood cell in water (hypotonic solution), they would swell due to osomsis and may even burst.