Give reasons :
(a) An increase in temperature is observed on mixing chloroform and acetone.
(b) Aquatic animals are more comfortable in cold water than in warm water.
(a) A mixture of chloroform and acetone forms a solution with negative deviation from Raoult's law because of the formation of hydrogen bond between the two.
Therefore,
(b) Solubility of in water increases with decrease of temperature. It makes aquatic species more comfortable in cold water than in warm water.