Question
If a 0.4 molal solution of a nonvolatile solute in organic solvent decreases its freezing point by 2.4 K., then the molal depression constant of solvent will be
MHT CET
Chemistry
Solutions
2026
MHT CET 2026 (15 April Shift 2)
MHT CET Chemistry Question (2026) — Solution
Options
- A. 3.0\ K kg mol ^ -1
- B. 4.0\ K kg mol ^ -1
- C. 5.0\ K kg mol ^ -1
- D. 6.0\ K kg mol ^ -1
Answer
D. 6.0\ K kg mol ^ -1
Step-by-step solution
Using the formula for depression in freezing point: T_f = K_f m Given T_f = 2.4 K and m = 0.4 mol kg^ -1 . Substituting the values: 2.4 = K_f 0.4 K_f = 2.4 0.4 = 6.0 K kg mol^ -1 Answer: 6.0\ K kg mol ^ -1
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