The freezing point of water is depressed by 0.37^ C in a 0.01 mol NaCl solution. Relative to this NaCl solution, a 0.02 molal solution of urea is

JEE Main Chemistry question

The freezing point of water is depressed by in a 0.01 mol NaCl solution. Relative to this NaCl solution, a 0.02 molal solution of urea is

(A)Hypotonic
(B)IsotonicCorrect
(C)Equimolar
(D)Hypertonic

Answer: (B)

Solution

For NaCl () at 0.01 m, the effective particle-molality is ; for urea (, non-electrolyte) at 0.02 m, the effective particle-molality is also . Since both solutions have the

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Question ID VK-143042