The molal elevation constant for four liquids P, Q, R and S, respectively, are 1.84, 2.20, 3.15 and β Solutions and Colligative Properties Chemistry Question
Question
The molal elevation constant for four liquids P, Q, R and S, respectively, are 1.84, 2.20, 3.15 and 3.92. If 0.1 M urea solution is made in all the solvents, then the solution in which solvent will show maximum depression in freezing point?
Answer: D
π‘ Solution & Explanation
Assuming the "molal elevation constant" printed in the question refers to the molal depression constant ($K_f$) of the solvents, the depression in freezing point is directly β $K_f$ for a constant molality. Since solvent S has the highest constant (3.92), it will exhibit the maximum depression in freezing point.
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