AP Chemistry · Unit 5: Kinetics
5.11 Catalysis
In short
You are expected to understand that catalysts increase reaction rates by providing an alternative reaction pathway with a lower activation energy or by increasing the number of effective collisions. You must recognize that the net concentration of a catalyst remains constant, even though it is typically consumed in the rate-determining step and regenerated in a subsequent step.
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What else do you need to know about Catalysis?
The required depth includes specific catalytic mechanisms: binding to reactants (such as enzymes), covalent bonding (such as acid-base catalysis involving proton transfer), and surface catalysis (where reactants bind to or form covalent bonds with a surface). The focus is on connecting the macroscopic effect of the catalyst to the particulate-level changes in the reaction mechanism.
How is Catalysis tested on the exam?
This topic is assessed with a strong focus on Argumentation (Suggested Skill 6.E). You are expected to provide reasoning to justify a claim using connections between particulate and macroscopic scales or levels. You must be able to identify catalysts within a reaction mechanism (consumed then regenerated) and explain how their presence alters the reaction pathway and activation energy.
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Catalysis: common questions
What do you need to know about Catalysis for AP Chemistry?
You are expected to understand that catalysts increase reaction rates by providing an alternative reaction pathway with a lower activation energy or by increasing the number of effective collisions. You must recognize that the net concentration of a catalyst remains constant, even though it is typically consumed in the rate-determining step and regenerated in a subsequent step.
How is Catalysis tested on the AP Chemistry exam?
This topic is assessed with a strong focus on Argumentation (Suggested Skill 6.E). You are expected to provide reasoning to justify a claim using connections between particulate and macroscopic scales or levels.
Where does Catalysis fit in AP Chemistry?
Catalysis is topic 5.11 in Unit 5: Kinetics of AP Chemistry.
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