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MHT CET202313 May 2023Evening ShiftChemistrySolutionsActual

What is the molality of solution of a nonvolatile solute having boiling point elevation 7.15 ~K and molal elevation constant 2.75 ~K ~kg ~mol ⁻¹ ?

Options

  1. A3.2 ~m
  2. B2.0 ~m
  3. C2.6 ~m
  4. D3.8 ~m

Correct answer

C. 2.6 ~m

Step-by-step solution

T _ b = K _ b m m = T _ b K _ b = 7.15 ~K 2.75 Kkg mol ⁻¹ =2.6 ~mol ~kg ⁻¹

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