Question

Phosgene (Cl₂CO), a poison gas used in World War I, is formed by the reaction of Cl₂ and CO. The proposed mechanism for the reaction is
Cl₂ ⇌ 2 Cl (fast,equilibrium)
Cl + CO ⇌ ClCO (fast,equilibrium)
ClCO + Cl₂ → Cl₂CO + Cl (slow)

Based on this mechanism, determine the rate law for the overall reaction.

Express your answer in terms of k and the necessary concentrations (ex: k[X][Y]^2). Use brackets around the concentrations and the caret symbol prior to the exponent. Do not include any multiplication signs. Type in subscripts as normal numbers (ex: Cl2, Cl2CO).

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Answer 1

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