FACTORS AFFECTING RATE

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Chemical Engineering

Last updated 9:05 AM on 2/9/23
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9 Terms

1
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What factors affect rate (5)
Concentration of reactants

Pressure of gases

Surface Area

Temperature

Catalysts
2
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What is collision theory
Reactions only occur when reacting particles collide with each other with sufficient energy
3
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How does temperature affect rate
Temperature increase = faster reaction

Kinetic energy of particles increases

More energetic collisions

Move faster, collide more frequently
4
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How does concentration affect rate
Concentration increase = faster reaction

More reactants

More frequent collisions
5
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How does pressure affect rate
Increase pressure = increase rate

Increases number of molecules in the same volume

Increases frequency of collisions

Increases rate of reaction
6
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How does surface area affect rate
Increase surface area = increase rate

Increases frequency of collisions

Increases rate of reaction
7
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What is a catalyst
changes rate of reaction but isnt used up
8
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How do catalysts work
Increases rate

Provides a different pathway to reaction w/ lower activation energy
9
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What is an enzyme
A molecule that acts as a biological enzyme