Catalysts and Reaction Profiles | GCSE Chemistry Practice
Catalysts speed up reactions without being used up in the process.
How does a catalyst affect the activation energy on a reaction profile diagram?
What is Catalysts and Reaction Profiles | Practice?
"A substance that increases the rate of a chemical reaction by lowering the activation energy."
Increasing the concentration of reactants increases the rate because particles...
Why does a powder react faster than a single large lump of the same mass?
How does a catalyst increase the rate of reaction?
Alternative Pathways
Catalysts provide an alternative reaction pathway.
This pathway has a lower activation energy.
More particles now have enough energy to react upon collision.
Enzymes are biological catalysts used in many processes.
Diagram Tip: On a reaction profile, a catalyst lowers the "hump" between reactants and products.
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