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The following mechanism has been proposed for the gas-phase reaction of chlorofo

ID: 925699 • Letter: T

Question

The following mechanism has been proposed for the gas-phase reaction of chloroform (CHCl3) and chlorine:
1) Cl2 2 Cl (fast, reversible)
2) Cl + CHCl3 HCl + CCl3 (slow)
3) Cl + CCl3 CCl4 (fast)
What rate law does this mechanism predict? Choose from the list below and enter the letters for all the terms needed in the rate law. (So for a rate law of k[Cl2] enter AB, and for a rate law of k[Cl2][CHCl3] enter ABD.)

A. k G. [CCl3]1/2 M. [Cl]2 B. Cl2 H. [HCl]1/2 N. [CHCl3]2 C. [Cl] I. [Cl2]1/2 O. [CCl3]2 D. [CHCl3] J. [Cl]1/2 P. [HCl]2 E. [CCl3] K. [CHCl3]1/2 F. [HCl] L. [Cl2]2

Explanation / Answer

For the above shown reaction the rate law would be,

ADI