According to the fundamental postulates of the Collision Theory of chemical reaction rates, which of the following rigorous definitions accurately describes the "activation energy" ()?

Question

According to the fundamental postulates of the Collision Theory of chemical reaction rates, which of the following rigorous definitions accurately describes the "activation energy" ($E_a$)?

Prashant Kotian · Accepted Answer

Correct answer: B. Activation energy () is the minimum extra amount of energy (over the average kinetic energy) required by reacting molecules to get converted into products. Therefore, it acts as an energy barrier; collisions occurring with kinetic energy below this barrier lack the force to break existing bonds, meaning they will not react.

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