Multistep reaction energy profiles | Kinetics | AP Chemistry | Khan Academy

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Many chemical reactions have mechanisms that consist of multiple elementary steps. The energy profile for a multistep reaction can be used to compare the activation energies of the different steps and identify the rate-determining step. The energy profile can also be used to determine the overall change in energy for the reaction. View more lessons or practice this subject at www.khanacademy.org/science/a...
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Um, not to get too critical, but in order to ensure the reaction moves to the generation of B + CD, doesn't the ending potential energy have to be below the beginning PE?

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No because this is an endothermic reaction and thus it will occur with input of energy

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