Answer to Question #199662 in Chemistry for Hsn

Question

Derive equation use to calculate depression in freezing point?

Answer 1

Freezing point depression is a colligative property observed in solutions that results from the introduction of solute molecules to a solvent. The freezing points of solutions are all lower than that of the pure solvent and is directly proportional to the molality of the solute.

ΔTf=T_f(solvent)−T_f(solution)=K_f×m

where ΔT_f is the freezing point depression,

T_f(solution) is the freezing point of the solution,

T_{f (solvent)} is the freezing point of the solvent,

K_f is the freezing point depression constant,

m is the molality.