Problem: A reaction A → D is thought to proceed via the following mechanism:Step 1: A → BStep 2: B → CStep 3: C → D The potential energy profile for the reaction is shown below:Which step is rate-limiting? Identify any intermediate(s). Is the overall reaction endothermic or exothermic?   

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Problem Details

A reaction A → D is thought to proceed via the following mechanism:

Step 1: A → B

Step 2: B → C

Step 3: C → D

The potential energy profile for the reaction is shown below:

Which step is rate-limiting?

Identify any intermediate(s).

Is the overall reaction endothermic or exothermic? 

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