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Manipal MET2015ChemistryChemical Kinetics

9.2 ~g ~N ₂ O ₄ is heated in 1 L vessel till equilibrium state is established. N ₂ O ₄(g) 2 NO ₂(g) In equilibrium state, 50 % ~N ₂ O ₄ was dissociated, equilibrium constant will be (molecular wt. of N ₂ O ₄=92 )

Options

  1. A0.1
  2. B0.4
  3. C0.3
  4. D0.2

Correct answer

D. 0.2

Step-by-step solution

N ₂ O ₄(g) 2 NO ₂(g) Molar concentration of [ N ₂ O ₄ ]= 9.2 92 =0.1 ~mol / L In equilibrium state, when it 50 % dissociates aligned [ N ₂ O ₄ ] & =0.05 M [ NO ₂ ] & =0.1 M aligned Now, from K_C= [ NO ₂ ]^2 [ ~N ₂ O ₄ ] K_C= 0.1 0.1 0.05 =0.2

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