Reaction Rates

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  • Created by: vanessa
  • Created on: 14-03-13 20:25

Reaction Rates

Reaction Rates

  • The rate of reaction measures the speed of a reaction or how fast it is.

Rate of reaction= amount of reactant used/time
OR

 amount of product formed/time

  • An average rate of reaction can be found by measuring the time it takes for a certain amount of solid to appear in a solution.
  • If a gas is given off in the reaction, its average rate can be found by measuring the time taken to collect a certain amount of gas.

The rate of a reaction at any given time can be found from the Gradient, or slope of the line on a graph of amount of reactant or product against time. The steeper the gradient is, the faster the reaction is at that time.

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More Reaction Rates

The rate of an reaction depends on 4 things:

1. Temperature

2.  Concentration - (or pressure for gases)

3. Catalyst

4. Surface area of solid - (or size of solid pieces )

 

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