Question

Cryoscopic constant of a liquid is ____________.

Options

• the elevation for 1 molar solution

• decrease in freezing point when 1 mole of solute is dissolved per Kg of the solvent

• a factor used for calculation of elevation in boiling point

• decrease in freezing point when 1 g of solute is dissolved per kg of the solvent

Answer 1

Cryoscopic constant of a liquid is decrease in freezing point when 1 mole of solute is dissolved per Kg of the solvent.

Explanation:

ΔT_f = K_fm

 When m (molality) = 1 m then K_f = ΔT_f