Rates of Reaction

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11 Terms

1
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What is collision theory?

  • Chemical reactions can only take place when the reacting particles collide with each other

  • The collisions must have sufficent energy

2
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What is frequency?

the number of successful collisions per second

3
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How does concentration of particles in a gas correlate with rate of reaction?

The higher the concentration of particles in a gas, the higher rate of reaction

4
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How does surface area of a solid correlate with rate of reaction?

When the surface area increases, the rate of reaction increases

5
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What is the surface are to volume ratio for smaller sized blocks?

  • they have a greater surface area to volume ratio than larger blocks

  • as more particles on the surface so more collisions per second

  • increasing the rate of reaction

6
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How does temperature correlate with the rate of reactions?

Increasing the temperature, means a higher rate of reaction

7
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How do catalysts affect the rate of reaction?

  • They increase the rate of reaction by providing a different pathway for the reaction that has a lower activation energy

  • so particels require less energy to cross the activation energy barrier

8
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What are enzymes?

Biological catalysts

9
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What’s the equilibrium point?

When the forward and the reverse reactions will take place at exactly the same rate

10
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What is Le Chatelier’s Principle?

If a system is at equilibrium and a change is made to the conditions, then the system responds to counteract the change

11
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What is a reversible reaction?

When the products can react to form the orginial reactants