Home/
Competitive Exams/
JEE Main & Advanced/
Chemistry/
Solutions and Colligative Properties/
Question 750007
JEE Chemistry · Medium

Solutions and Colligative Properties: Freezing point depression MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

Timer-based practiceDetailed answer reviewMobile-friendly flow
Freezing point depressionMediumQuestion 750007

Question

Kf for water is 1.86 K kg mol⁻¹. For 0.1 m NaCl (i ≈ 2), ΔTf is:
  1. A
    0.372 K
    Correct
  2. B
    0.186 K
  3. C
    0.744 K
  4. D
    1.86 K

Correct answer

0.372 K

Explanation

ΔTf = i × Kf × m = 2 × 1.86 × 0.1 = 0.372 K. NaCl dissociates into Na⁺ and Cl⁻ → van't Hoff factor i = 2.

Review Solutions and Colligative Properties notesStart timed chapter practice