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MHT CET202619 April 2026Morning ShiftChemistrySolutionsActual

A solution of non volatile solute has boiling point elevation 0.70 K if K_b for the solvent is 2.44 K kg mol ⁻¹ . What is the molality of the solution?

Options

  1. A3.48 m
  2. B2.86 m
  3. C0.286 m
  4. D0.0186 m

Correct answer

C. 0.286 m

Step-by-step solution

The elevation in boiling point is given by the formula: T_b = K_b m where T_b is the boiling point elevation, K_b is the ebullioscopic constant, and m is the molality of the solution. Given: T_b = 0.70 K K_b = 2.44 K kg mol ⁻¹ Substituting the given values into the formula: 0.70 = 2.44 m m = 0.70 2.44 m 0.286 m Answer: 0.286 m

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