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 AC, and for a rate law of k[Cl2][CHCl3] enter ACE.)

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