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NEET2018ChemistryChemical KineticsActual

In the reversible reaction, 2 NO ₂ k ₂ k ₁ N ₂ O ₄ the rate of disappearance of NO ₂ is equal to

Options

  1. A2 k₁ k₂ [ NO ₂ ]^2
  2. B2 k₁ [ NO ₂ ]^2-2 k₂ [ ~N ₂ O ₄ ]
  3. C2 k₁ [ NO ₂ ]^2-k₂ [ ~N ₂ O ₄ ]
  4. D(2 k₁-k₂ ) [ NO ₂ ]

Correct answer

B. 2 k₁ [ NO ₂ ]^2-2 k₂ [ ~N ₂ O ₄ ]

Step-by-step solution

2 NO ₂ k ₂ k ₁ N ₂ O ₄ Rate of reaction =- 1 2 d [ NO ₂ ] dt = k ₁ [ NO ₂ ]^2- k ₂ [ ~N ₂ O ₄ ] Rate of disappearance of NO ₂ i.e. - d [ NO ₂ ] dt =2 k ₁ [ NO ₂ ]^2-2 k ₂ [ ~N ₂ O ₄ ]

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