Question

For which solution, the depression in freezing point equals the cryoscopic constant for the solvent?

Options

• 0.1 m glucose solution

• 0.1 m urea solution

• 1.0 m glucose solution

• 0.01 m urea solution

Answer 1

1.0 m glucose solution

Explanation:

ΔT_f = K_f × m

If m = 1, then ΔT_f = K_f

As a result, the decrease in freezing point for a 1.0 m glucose solution equals the cryoscopic constant for the solvent.