It is more convenient to obtain the molecular mass of an unknown solute by measuring the freezing po — Solutions and Colligative Properties Chemistry Question

💡 Solution & Explanation

The molal freezing point depression constant ($K_f$) of water is 1.86 K-kg/mol, while its molal boiling point elevation constant ($K_b$) is only 0.52 K-kg/mol. For any given dilute aqueous solution, the depression in freezing point (ΔT_f) is more than three times larger than the elevation in boiling point (ΔT_b). Therefore, ΔT_f can be measured with greater accuracy and using simpler experimental setups, making it more convenient.