1. • Average rate of reaction
• Rate of reaction at a specific time/
instantaneous rate of reaction

2. Average rate of reaction
Average rate of reaction = change in amount of reactant/product
Time taken for the change to happen
Example:
 Overall rate of reaction
 Average rate of reaction in the first minute
 Average rate of reaction in the first two minutes
 Average rate of reaction in the second minutes

3. Rate of reaction at any given time
 Determined by
 Drawing a tangent to the curve at the given time
 Finding the gradient of the tangent