C2.4 - Rates Of Reaction Flashcards

1
Q

What is the minimum energy needed for two particles to react called?

A

The activation energy.

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2
Q

What can be done to increase the rate of reaction? (4)

A
  1. Increasing the temperature.
  2. Increasing the pressure.
  3. Increasing the concentration of the reactants.
  4. Increasing the surface area of the reactants.
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3
Q

Why does increasing the temperature increase the rate of reaction?

A

Particles move faster and therefore collide more frequently and more energetically.

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4
Q

Why does increasing the pressure increase the rate of reaction?

A

The frequency of collision increases.

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5
Q

Why does increasing the concentration of the reactants increase the rate of reaction?

A

The frequency of collisions is greater.

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6
Q

Why does increasing the surface area of the reactants increase the rate of reaction?

A

The frequency of collisions is greater.

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7
Q

What are catalysts?

A

Substances that speed up the rate of reaction by providing an alternate path for the reaction to travel along, but are not used up during the reaction.

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8
Q

Why are catalysts important in industry?

A

Energy costs are reduced.

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9
Q

What equation can be used to find the rate of a reaction?

A

Amount of reactant or product used/Time

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