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The following mechanism has been proposed for the gas-phase reaction of chloroform (CHCl3) and chlorine.Cl2 ⇌ 2Cl (fast, reversible) Cl + CHCl3 → HCl + CCl3 (slow) Cl + CCl3 → CCl4 (fast) What rate law does this mechanism predict?A)kG) [CHCl3]1/2M) [CCl3]2B) [Cl2]H) [CCl3]1/2N) [HCl]2C) [Cl]I) [HCl]1/2O) [Cl2]2D) [CHCl3]J) [Cl2]1/2P) [Cl]2E) [CCl3]K) [Cl]1/2 F) [HCl]L) [CHCl3]2
The following mechanism has been proposed for the gas-phase reaction of chloroform (CHCl3) and chlorine.Cl2 ⇌ 2Cl (fast, reversible) Cl + CHCl3 → HCl + CCl3 (slow) Cl + CCl3 → CCl4 (fast) What rate law does this mechanism predict?A)kG) [CHCl3]1/2M) [CCl3]2B) [Cl2]H) [CCl3]1/2N) [HCl]2C) [Cl]I) [HCl]1/2O) [Cl2]2D) [CHCl3]J) [Cl2]1/2P) [Cl]2E) [CCl3]K) [Cl]1/2 F) [HCl]L) [CHCl3]2
Question
Asked Oct 30, 2019
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The following mechanism has been proposed for the gas-phase reaction of chloroform (CHCl3) and chlorine.
Cl2 ⇌ 2Cl (fast, reversible)
Cl + CHCl3 → HCl + CCl3 (slow)
Cl + CCl3 → CCl4 (fast)
What rate law does this mechanism predict?
A)k G) [CHCl3]1/2 M) [CCl3]2
B) [Cl2] H) [CCl3]1/2 N) [HCl]2
C) [Cl] I) [HCl]1/2 O) [Cl2]2
D) [CHCl3] J) [Cl2]1/2 P) [Cl]2
E) [CCl3] K) [Cl]1/2
F) [HCl] L) [CHCl3]2
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Expert Answer
Step 1
The three step mechanism of the given reaction is,
CL2 dissociate to give chorine a fast and reverse reaction.
React with CHCL3 to give HCL and CCL3 a slow reaction
React with CL to give CCL4.
Step 2
Add equation (1), (2), and (3) to get the overall reaction.
The overall reaction is expressed as,
CL2 dissociate to give chorine a fast and reverse reaction.
React with CHCL3 to give HCL and CCL3 a slow reaction
React with CL to give CCL4.
Step 3
The chlorine atom produced in equation (1) is consumed in equation (3) and CCl3 a molecule is produced in equation (2) is consumed in equation (3).
CL react with CHCL3 to give a reversible reaction of HCL and CCL4.
