Question

For the reaction 2 NO (g) + O2 (g) → 2 NO2 (g) it is found...

For the reaction

2 NO (g) + O2 (g) → 2 NO2 (g)

it is found that the rate doubles when the O2 concentration is doubled, but the rate increases by a factor of 4 when the NO concentration is doubled. Which of the following mechanisms is/are consistent with this?

1. (i) NO + O2 ⇋ NO3 (fast)

(ii) NO + NO3 → 2 NO2 (slow)

2. (i) 2 NO → N2O2 (slow)

(ii) O2 + N2O2 → N2O4 (fast)

(iii) N2O4 → 2 NO2 (fast)

3. (i) 2 NO ⇋ N2O2 (fast)

(ii) O2 + N2O2 → N2O4 (slow)

(iii) N2O4 → 2 NO2 (fast)

  • A. 1 only
  • B. 2 & 3 only
  • C. 3 only
  • D. 2 only
  • E. 1 & 3 only
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Answer #1

from the be given of reaction can given state ment rate as rate = K[no][0] As slow step is rate determining step OL_rate= KHope you will like my answer.

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