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KCET2022ChemistryChemical Equilibrium

1 mole of HI is heated in a closed container of capacity of 2 ~L . At equilibrium half a mole of HI is dissociated. The equilibrium constant of the reaction is

Options

  1. A0.5
  2. B0.25
  3. C0.35
  4. D1

Correct answer

B. 0.25

Step-by-step solution

2 HI H ₂+ I ₂ Initial mole : 1 x x Final mole: (1-x) x / 2 x / 2 K_C= x^2 4(1-x)^2 By putting the value of x=1 / 2 , we get, K_C= 1 / 4 4(1-1 / 2)^2 =0.25

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