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MHT CET Chemistry question

ChemistrySome Basic Concepts of ChemistryMHT CET

An aqueous solution of urea containing 18 g urea in 1500 of the solution has a density equal to 1.052. If the molecular weight of urea is 60, the molality of the solution is [MHTCET 2011]

Answer: (B)

Solution

Mass of solution = 1500 × 1.052 = 1578 g, so water = 1578 - 18 = 1560 g; moles of urea = 0.3, hence

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Question ID VK-061409