Consider the following reaction. CO(g) + Cl₂(g) → COCl₂(g)
The mechanism is believed to be,
(1) Cl₂ + C → 2Cl (fast equilibrium)
(2) Cl + CO → COCl (fast equilibrium)
(3) COCl + Cl₂ → COCl₂ + Cl (slow)
(4) 2Cl → Cl₂ (fast)
Assuming that the mechanism is correct, derive the rate law for this reaction.