Experiment shows that the rate formation of carbon tetrachloride from chloroform, CH3 +Cl2 → CCl4 + HCI is the first order in CHCl3, ½ order in Cl2 and 3/2 order overall. Is the following mechanism consistent with the overall rate low? Cl2 2 Cl (K1, K-1) fast Cl + CHCl 3 → HCI + CC13⚫ (k2) slow CCl3 + Cl⚫ CCl4 (K3) fast (Use the steady state principle for the radicals Cl• and CC13. to determine the differential rate equation of carbon tetrachloride formation d [CCl4] / dt).

Chemistry
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Chapter12: Chemical Kinetics
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Experiment shows that the rate formation of carbon tetrachloride from chloroform,
CH3 +Cl2 → CCl4 + HCI
is the first order in CHCl3, ½ order in Cl2 and 3/2 order overall. Is the following
mechanism consistent with the overall rate low?
Cl2 2 Cl
(K1, K-1)
fast
Cl + CHCl 3 → HCI + CC13⚫
(k2)
slow
CCl3 + Cl⚫
CCl4
(K3)
fast
(Use the steady state principle for the radicals Cl• and CC13. to determine the
differential rate equation of carbon tetrachloride formation d [CCl4] / dt).
Transcribed Image Text:Experiment shows that the rate formation of carbon tetrachloride from chloroform, CH3 +Cl2 → CCl4 + HCI is the first order in CHCl3, ½ order in Cl2 and 3/2 order overall. Is the following mechanism consistent with the overall rate low? Cl2 2 Cl (K1, K-1) fast Cl + CHCl 3 → HCI + CC13⚫ (k2) slow CCl3 + Cl⚫ CCl4 (K3) fast (Use the steady state principle for the radicals Cl• and CC13. to determine the differential rate equation of carbon tetrachloride formation d [CCl4] / dt).
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