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The Reaction 2NO + O2 \to 2NO2 Obeys the Rate Law - = Kobsd[NO]2[O2]

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The reaction 2NO + O2 \to 2NO2 obeys the rate law -  The reaction 2NO + O<sub>2</sub>  \to  2NO<sub>2</sub> obeys the rate law -   = k<sub>obsd</sub>[NO]<sup>2</sup>[O<sub>2</sub>]. Which of the following mechanisms is consistent with the experimental rate law? A) NO + NO  \to  N<sub>2</sub>O<sub>2</sub> (slow) N<sub>2</sub>O<sub>2</sub> + O<sub>2</sub>  \to  2NO<sub>2 </sub> (fast)  B) NO + O<sub>2</sub> <sub> </sub>   NO<sub>3</sub> (fast equilibrium) NO<sub>3</sub> + NO  \to  2NO<sub>2 </sub> (slow)  C) 2NO   N<sub>2</sub>O<sub>2</sub> (fast equilibrium) N<sub>2</sub>O<sub>2</sub>  \to  NO<sub>2</sub> + O (slow) NO + O  \to  NO<sub>2</sub> (fast)  D) O<sub>2</sub> + O<sub>2</sub>  \to  O<sub>2</sub> + O<sub>2 </sub> (slow) O<sub>2</sub> + NO  \to  NO<sub>2</sub> + O (fast) O + NO  \to  NO<sub>2 </sub> (fast)  E) none of these = kobsd[NO]2[O2]. Which of the following mechanisms is consistent with the experimental rate law?


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