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MHT CET202013 Oct 2020Morning ShiftChemistryChemical KineticsActual

The rate law for the reaction 2 NO _ ( g ) + O _ 2( ~g ) 2 NO _ 2( ~g ) is rate = k [ NO ]² [ O ₂ ] , then which among the following statement is correct?

Options

  1. AThe reaction is first order in O ₂ , first order in NO and second order overall.
  2. BThe reaction is second order in NO, zero order in O ₂ and second order overall.
  3. CThe reaction is second order in NO , first order in O ₂ and third order overall.
  4. DThe reaction is zero order overall.

Correct answer

C. The reaction is second order in NO , first order in O ₂ and third order overall.

Step-by-step solution

Rate =k[ NO ]² [ O ₂ ] Here, x=2, y=1 Overall order of reaction =x+y=3

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