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K ₂ HgI ₄ is 40 % ionised in aqueous solution. The value of its van't Hoff factor (i) is:

Options

  1. A1.6
  2. B1.8
  3. C20
  4. D22

Correct answer

B. 1.8

Step-by-step solution

K ₂ Hgl ₄ 2 ~K ⁺+ [ Hgl ₄ ]²⁻ ; n =3 aligned & = i-1 n-1 ; 0.4= i -1 3-1 & i=1.8 aligned

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