AP Chemistry Unit 5.10 Multistep Reaction Energy Profiles AP PhysicsAP CalculusAP ChemistryAP Biology AP Chemistry-Concise Summary Notes- All Topics Multistep Reaction Energy Profiles The slowest (rate-determining) step in a mechanism will have the highest activation energyOn graph, will have the highest peakNumber of peaks = number of elementary stepsIntermediates are found in minimums of graph; the transition states are found in the maximum of graphs