Chapter 14.7, Problem 14.12CYU

Nitrogen monoxide is reduced by hydrogen to give nitrogen and water:

2 NO(g) + 2 H₂(g) → N₂(g) + 2 H₂O(g)

One possible mechanism for this reaction involves the following reactions:

2 NO(g) → N₂O₂(g)

N₂O₂(g) + H₂(g) → N₂O(g) + H₂O(g)

N₂O(g) + H₂(g) → N₂(g) + H₂O(g)

What is the molecularity of each of the three steps? What is the rate equation for the third step? Identify the intermediates in this reaction; how many different intermediates are there? Show that the sum of these elementary steps gives the equation for the overall reaction.