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Example Questions
Example Question #1 : Help With Activation Energy And Catalysts
With what mechanism do catalysts speed up a reaction?
Possible Answers:
They lower the of the reaction.
They lower the activation energy of the reaction.
They raise the activation energy of the reaction.
They increase the of the reaction.
Correct answer:
They lower the activation energy of the reaction.
Explanation:
Regarding chemical reactions, the activation energy is the minimum energy which must be available in a chemical system in order for reactants to participate in a chemical reaction. Catalysts speed up reactions by lowering this minimum energy. Raising it would have the opposite effect. Catalysts do not alter the of a reaction. Remember this--it is a common error to make!
Sean
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University of Southern Indiana, Bachelor of Science, Chemistry. Indiana University-Bloomington, Doctor of Science, Chemistry.
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