A Possible Mechanism for the Gas Phase Reaction of NO

question 17

Multiple Choice

A possible mechanism for the gas phase reaction of NO and H₂ is as follows:

Which of the following statements concerning this mechanism is not directly supported by the information provided?

• A) Step 1 is the rate determining step.
• B) N₂O₂ is an intermediate.
• C) There is no catalyst in this reaction.
• D) The rate expression for step 1 is rate = k[NO]².
• E) All steps are bimolecular reactions.

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