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JEE Main2012ChemistrySome Basic Concepts of ChemistryActual

The density of a solution prepared by dissolving 120 ~g of urea (mol. Mass =60 u ) in 1000 ~g of water is 1.15 ~g / mL . The molarity of this solution is :

Options

  1. A0.50 ~M
  2. B1.78 ~M
  3. C1.02 ~M
  4. D2.05 ~M

Correct answer

D. 2.05 ~M

Step-by-step solution

Total weight of solution =1000+120=1120 ~g Molarity = 120 60 1000 1120 / 1.15 =2.05 ~M

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