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Why is activation energy positive for an exothermic reaction?

Why is activation energy positive for an exothermic reaction?

Grade:12

1 Answers

RAHUL ROHILLA
askIITians Faculty 873 Points
5 years ago
Allchemical reactions, includingexothermic reactions,need activation energytogetstarted.Activation energyis needed so reactantscanmove together, overcome forces of repulsion, and start breaking bonds
Activation energyis typicallypositive. It's the minimumenergyrequired for a chemical reaction to proceed. ... So when you fit the rate constant into an Arrhenius expression, it results in anegative activation energy. But these reactions are generally the ones without barriers

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