3.2.2

How does increasing the concentration affect the rate of reaction?
When the concentration of a reactant is increased, the rate of reaction increases, as there are more successful collisions.
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What is a catalyst?
A substance that changes the rate of a chemical reaction without being used up in the overall reaction.
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How does a catalyst increase the rate of reaction?
A catalyst provides an alternative reaction pathway with lower activation energy.
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Why are catalysts important for sustainability?
Catalysts increase the rate of reaction by lowering the activation energy, which reduces the temperature and energy needed for the reaction.
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How does the Boltzmann distribution change with increased temperature?
The curve shifts right, as more molecules have more energy and can overcome the activation energy of the reaction.
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How does the Boltzmann distribution change with catalysts?
The Botzmann distribution remains the same, but the Ea is reduced to Ec, so more molecules exceed the new lower activation energy.
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Card 2

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What is a catalyst?

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A substance that changes the rate of a chemical reaction without being used up in the overall reaction.

Card 3

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How does a catalyst increase the rate of reaction?

Back

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Card 4

Front

Why are catalysts important for sustainability?

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Card 5

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How does the Boltzmann distribution change with increased temperature?

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