MHT CET Chemistry question

Chemistry Some Basic Concepts of Chemistry MHT CET

Dissolving 120 g of urea (mol.wt.60) in 1000 g of water gave a solution of density 1.15 g/mL. The molarity of the solution is:

(A)1.78
(B)2.00
(C)2.05 Correct
(D)2.22

Answer: (C)

Solution

Moles of urea = 120/60 = 2; mass of solution = 1120 g so volume = 1120/1.15 = 973.9 mL and M = 2/0.9739

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Question ID VK-041178