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Consider this gas phase reaction. Cl2(g) + CHCl3(g) → HCl(g) + CCl4(g) The reaction is found experimKinetics Chemistry Question

Question

Consider this gas phase reaction.
Cl2(g) + CHCl3(g) → HCl(g) + CCl4(g)
The reaction is found experimentally to follow this rate law.
rate = k [CHCl3] [Cl2]1/2
Based on this information, what conclusions can be drawn about this proposed mechanism?
Step 1. Cl2(g) æ 2Cl(g)
Step 2. Cl(g) + CHCl3(g) → HCl(g) + CCl3(g)
Step 3. Cl(g) + CCl3(g) → CCl4(g)

A.

Step 1 is the rate-determining step.

B.

Step 2 is the rate-determining step.

✓ Correct
C.

Step 3 is the rate-determining step.

D.

The rate-determining step cannot be identified.

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