What is the rate law for the overall reaction for this mechanism?

  • Thread starter Thread starter your mom
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C + D <--> CD (fast)
CD + D --> CD^2 (slow)
CD^2 +D --> CD^3 (fast)

C + 3D --> CD^3 (overall)
 
We need to get rid of CD in the slow step.
C+D=CD therefore, we rewrite the elementary reaction as,

CD+D->CD^2(slow)
C+D+D->CD^2(slow)
C+2D->CD^2(slow)

Rate=k[C][D]²
 
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