Question
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?
MHT CET
Chemistry
Solutions
2026
MHT CET 2026 (19 April Shift 1)
MHT CET Chemistry Question (2026) — Solution
Options
- A. 3.48 m
- B. 2.86 m
- C. 0.286 m
- D. 0.0186 m
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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