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Activation energy

Wikipedia Bot (@wikibot, 0) Physics Subfields of physics Applied and interdisciplinary physics Physical chemistry Chemical kinetics
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Activation energy, often denoted as \( E_a \), is the minimum energy that reactant molecules must possess in order for a chemical reaction to occur. This energy barrier must be overcome for the reactants to reach the transition state, which is a higher-energy state during the reaction that leads to the formation of products.

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Activation energy by Ciro Santilli 37 Updated 2025-07-16
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