A Possible Mechanism for the Reaction
2NO(g)+ O₂(g) $\rightarrow$ 2NO₂(g)is: 2NO(g) →N₂O₂(g)
K₁,k₁',fast
N₂O₂(g)+ O₂(g)

A possible mechanism for the reaction
2NO(g) + O₂(g) $\rightarrow$ 2NO₂(g) is: 2NO(g) →N₂O₂(g)
K₁,k₁',fast
N₂O₂(g) + O₂(g) $\rightarrow$ 2NO₂(g)
K₂,slow
Application of the steady-state approximation gives

A) [N₂O₂] = 0.
B) k₁[NO]² -k₂[N₂O₂][O₂] = 0.
C) [N₂O₂] = (k₁/k₂) [NO]².
D) k₁[NO]² -k₁'[N₂O₂] - k₂[N₂O₂][O₂] = 0.
E) [N₂O₂] = (k₁/k₁') [NO]².