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The depression in freezing point of 0.1 M aqueous solutions of HCl , CuSO ₄ and K ₂ SO ₄ are in the ratio

Options

  1. A1: 1: 1.5
  2. B1: 2: 3
  3. C1: 1: 1
  4. D2: 4: 3

Correct answer

A. 1: 1: 1.5

Step-by-step solution

T_f=i K_f m Thus, T_f i (as concentration is same for all solutions) i for HCl =2, i for CuSO ₄=2, i for K ₂ SO ₄=3 Thus, ratio of depression in freezing point =2: 2: 3=1: 1: 1.5

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