Write short note an freezing point depression in freezing point and cryoscopic constant.

Explanation

(i) Freezing point is defined as " the temperature at which the solid and the liquid states of the substance have the same vapour pressure"
(ii) The freezing point of water is ` )^(@) C ` .At this temperature the ice and the water are in equilibrium . When a nonbolatile solute is added to water at its freezing point . the freezing point of the solution is lowered from ` 0^(@) C ` The lowering of the freezing point the solvent when a solute is added is called derpression in freezing point ` (Delta T_f) `