3.14C: Draw and Explain Reaction Profile Diagrams showing △H and Activation Energy

CATALYST: Substance that increases the rate of reaction white remaining chemically unchanged at the end of reaction

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• Catalyst will provide an alternative pathway requiring lower activation energy, therefore more colliding particles will have necessary activation energy to react
• This allows more frequent successful collisions to occur, increasing the rate of reaction

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ENERGY LEVEL DIAGRAM:

 

Graph showing the Effect of a Catalyst on the Activation Energy and Enthalpy Change