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AP Chemistry/Unit 5: Kinetics
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Reverse Activation Energy From An Energy Profile

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The energy profile for a three-step reaction mechanism indicates transition state energies of 85, 60, and 75 kJ/mol and intermediate energies of 30 and 45 kJ/mol, all relative to the reactants. If the final products have an energy of 20 kJ/mol, what is the activation energy for the reverse of the overall reaction?

A

85 kJ/mol

B

40 kJ/mol

C

55 kJ/mol

D

65 kJ/mol

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