During depression of freezing point in a solution, the following are in equilibrium:

Options

A. Liquid solvent, solid solvent
B. Liquid solvent, solid solute
C. Liquid solute, solid solute
D. Liquid solute, solid solvent

Answer

A

Explanation

Freezing point of a substance is defined as the temperature at which the vapour pressure of its liquid is equalto the vapour pressure of the corresponding solid. At this point, there is an equilibrium between solid and liquid states.If we cool a solute of a non-volatile solute to a temperature below the freezing point of solution, some of the liquid solvent will separate as a solid and due to this there will be an increase in concentration of the solution.