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Energy barriers and rate equations

Energy barriers and rate equations

Reaction profile for an exothermic reaction with reactants, products, transition state, activation energy and enthalpy change labelled Reaction mechanisms explain what happens in the tiny steps between reactants and products. A collision only leads to reaction if particles have the correct orientation and enough energy to reach the transition state, so the activation energy EaE_{\text{a}}Ea​ is the minimum energy needed for a successful collision.

Reaction mechanisms and activation energy Lesson

  1. A Level
  2. /Chemistry
  3. /Reaction mechanisms and activation energy

Step-by-step lessons on Edexcel A Level Chemistry Reaction mechanisms and activation energy. Each one builds up to exam-style questions. Build confidence with atomic structure, bonding and moles calculations early on, since these underpin the more demanding organic mechanisms, equilibrium and practical-analysis topics that dominate Year 2.

Lessons