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The freezing point of 1 molal NaCl solution assuming NaCl to be 100% dissociated in water is - K f f o r H 2 O = 1.86 0 C m - 1

Options

  1. A- 1.86 0 C
  2. B- 3.72 0 C
  3. C+ 1.86 0 C
  4. D+ 3.72 0 C

Correct answer

B. - 3.72 0 C

Step-by-step solution

The freezing point of 1 molal NaCl solution assumtextng NaCl to be 100% dissociated in water is - ∆ T f = i × K f × m = 2 × 1.86 × 1 = 3.72 o C Freezing point = (0-3.72) = - 3.72 o C

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