A Proposed Mechanism for the Reduction of Nitrogen as NO $\rightarrow$

question 52

Multiple Choice

A proposed mechanism for the reduction of nitrogen as NO by hydrogen is:
Step 1: H₂(g) + 2 NO(g) $\rightarrow$ N₂O(g) +H₂O(g) (slow)
Step 2: N₂O(g) + H₂(g) $\rightarrow$ N₂(g) +H₂O(g) (fast) Which of the following statements is NOT true?

• A)The energy profile for this reaction probably has two maxima.
• B)The reaction rate is probably second order in NO.
• C)The reaction rate is probably first order in H₂.
• D)N₂O is an activated complex.
• E)The activation energy for step 2 is probably less than that of step 1.

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