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Highly selective Backlog Qs for JEE MainChemistryChemical Equilibrium

Equivalent amounts of H ₂ and I ₂ are heated in a closed vessel till equilibrium is obtained. If 80 % of the hydrogen can be converted to HI , the Kc at this temperature is

Options

  1. A64
  2. B16
  3. C0.25
  4. D4

Correct answer

A. 64

Step-by-step solution

K _ c = [ HI ]² [ H ₂ ] [ I ₂ ] = (2 x )² (1- x )² Given x =80 %=0.80 K _ c = (2 0.80)² (1-0.80)² =64

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