0.67 0.5 0.67  8.096 2 1.34 0.5 0.67 32.384  3 0.67 1 0.67 16.192  4 0.67 0.5 1.34 8.096 Two mechanisms are proposed:   Mechanism 1: A  + C  →→  D + Y Y + C  →→  X X +2 A + B  →→  D + Z Z + A →→ E Mechanism 2: B  +  C  →→  D + Y Y + B + C →→  X + D X + A + C  →→  E Which mechanism best fits the data?  Select an answer  Mechanism 1 or  Mechanism 2  Which is most likely the rate-determining step? Select an answer  Step 1 or Step 2 or  Step 3  or Step 4

Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Consider the following reaction.  

 4 A + B + 3 C →→  4 D + E

The following data was collected on the reaction.

Trial  [A]0 [B]0 [C]0 Rate (M/s)
1 0.67 0.5 0.67  8.096
2 1.34 0.5 0.67 32.384 
3 0.67 1 0.67 16.192 
4 0.67 0.5 1.34 8.096

Two mechanisms are proposed:  

Mechanism 1:

A  + C  →→  D + Y
Y + C  →→  X
X +2 A + B  →→  D + Z
Z + A →→ E

Mechanism 2:

B  +  C  →→  D + Y
Y + B + C →→  X + D
X + A + C  →→  E

Which mechanism best fits the data?  Select an answer

 Mechanism 1 or  Mechanism 2 

Which is most likely the rate-determining step? Select an answer

 Step 1 or Step 2 or  Step 3  or Step 4 

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