Question

For the reaction:

2 H₂ + 2 NO → N₂ + 2 H₂O

the observed rate expression, under some conditions, is:

rate = k[H₂][NO]

Which of the following mechanisms are consistent with these data?

Select all that are True.
step 1   2 NO → N₂O₂     (slow)
     step 2   N₂O₂ + H₂ → N₂O + H₂O     (fast)
     step 3   N₂O + H₂ → N₂ + H₂O     (fast)


step 1   NO + NO ⇌ N₂O₂     (fast)
     step 2   N₂O₂ + H₂ → N₂ + H₂O + O     (slow)
     step 3   O + H₂ → H₂O     (fast)


step 1   2 NO ⇌ N₂O₂     (fast)
     step 2   N₂O₂ + H₂ → N₂O + H₂O     (slow)
     step 3   N₂O + H₂ → N₂ + H₂O     (fast)


step 1   H₂ + 2 NO → N₂O + H₂O     (slow)
     step 2   N₂O + H₂ → N₂ + H₂O     (fast)

Please show all work/reasoning

Answer 1