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Question 600091
JEE Chemistry · Medium

Mole Concept and Stoichiometry: Molality MCQ

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MolalityMediumQuestion 600091

Question

Calculate molality of a solution prepared by dissolving 6 g urea (M=60) in 200 g water:
  1. A
    0.25 m
  2. B
    0.5 m
    Correct
  3. C
    1 m
  4. D
    2 m

Correct answer

0.5 m

Explanation

n(urea) = 6/60 = 0.1 mol. Solvent = 200 g = 0.2 kg. m = 0.1/0.2 = 0.5 m.

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