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Question 750015
JEE Chemistry · Hard

Solutions and Colligative Properties: Mixed MCQ

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MixedHardQuestion 750015

Question

If 5.85 g of NaCl (M=58.5) is dissolved in 500 g water, the molality is:
  1. A
    0.2 m
    Correct
  2. B
    0.1 m
  3. C
    0.4 m
  4. D
    0.02 m

Correct answer

0.2 m

Explanation

Moles NaCl = 5.85/58.5 = 0.1 mol. Molality = 0.1 mol / 0.5 kg = 0.2 mol/kg.

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