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AP EAMCET2011ChemistryChemical Equilibrium

If the equilibrium constant for the reaction 2 A B A₂+B₂ is 49 , what is the equilibrium constant for A B 1 2 A₂+ 1 2 B₂ ?

Options

  1. A7
  2. B1 7
  3. C24.5
  4. D49

Correct answer

A. 7

Step-by-step solution

array r 2 A B A₂+B₂ K_c= [A₂ ] [B₂ ] [A B]^2 array again, aligned A B & 1 2 A₂+ 1 2 B₂ K_c ^ & = [A₂ ]^ 1 / 2 [B₂ ]^ 1 / 2 [A B] K_c & = (K_c ^ )^2 aligned or K_c ^ = K_c = 49 =7

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