Can a chemical reaction involve more than one activated complex?
I don’t think so. An activated complex is when the reactant molecules collide to form a temporary new unstable molecule that will either revert back to reactant molecules or convert to product molecules. So for any specific reaction there can only be one activated complex that satisfies that reaction. For example. A+B+C===>D+E Now of course A and B could form an activated complex, A-B but that doesn’t satisfy this reaction. The only activated complex that satisfies this reaction is A-B-C.