Factors affecting reaction rate?

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  • Created by: J.E.C.
  • Created on: 13-04-14 13:45
Give five factors that could affect the rate of reaction?
Concentration of reactants, temperature, intensity of radiation (if used), particle size and catalyst
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Briefly describe what is meant by the collision theory?
Reactions occur when particles of reactants collide, provided they collide with a certain minimum kinetic energy. Particles will collide more often if there is more of them in a given volume. Existing bonds stretch & break and new bonds form.
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What is an entropy profile?
When a plot is drawn of reaction progress against enthalpy.
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At higher temperatures...?
A much larger proportion of colliding pairs have enough energy to react.
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Define activation enthalpy?
The minimum kinetic energy required by a pair of colliding particles before a reaction will occur.
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What does the highest point on the enthalpy profile represent?
An arrangement of atoms where old bonds are stretched and new ones begin to form.
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Card 2

Front

Briefly describe what is meant by the collision theory?

Back

Reactions occur when particles of reactants collide, provided they collide with a certain minimum kinetic energy. Particles will collide more often if there is more of them in a given volume. Existing bonds stretch & break and new bonds form.

Card 3

Front

What is an entropy profile?

Back

Preview of the front of card 3

Card 4

Front

At higher temperatures...?

Back

Preview of the front of card 4

Card 5

Front

Define activation enthalpy?

Back

Preview of the front of card 5
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