# Chemical Kinetics Problem Seen Before

Chemistry Level 2

The reaction of formation of phosghene from $$\ce{CO}$$ and $$\ce{Cl2}$$ is $$\ce{CO}+\ce{Cl2}\rightarrow \ce{COCl2}$$. The proposed mechanism is as follows:

$$\text{(i) }\ce{Cl2}\xrightarrow [ K_{ 1 } ]{ \xleftarrow { K_{-1} } } \ce{2Cl}\quad(\text{fast})$$

$$\text{(ii) }\ce{Cl}+\ce{CO}\xrightarrow [ K_{ 2 } ]{ \xleftarrow { K_{-2} } } \ce{COCl}\quad(\text{fast})$$

$$\text{(iii) }\ce{COCl}+\ce{Cl2}\xrightarrow { { K }_{ 3 } } \ce{COCl2}+\ce{Cl}\quad(\text{slow})$$

What is the order of reaction?

×