Consider a reaction that occurs by the following one-step mechanism:
A 2 + B 2 → 2 AB
The potential energy profile for this reaction is shown below.
-What is the species present at reaction stage 1?

Question

Consider a reaction that occurs by the following one-step mechanism:
A 2 + B 2 → 2 AB
The potential energy profile for this reaction is shown below. 
-What is the species present at reaction stage 1?

Quizplus · Accepted Answer

At reaction stage 1, the species present is typically a reactant, as it is the starting material before any reaction has occurred.

Consider a Reaction That Occurs by the Following One-Step Mechanism