To find the average rate of change, divide the change in y-values by the change in x-values.The average rate of a reaction is defined as the change in concentration of a reactant or product divided by the time interval over which the change occurs.
Average rate of reaction = Change in concentration / Time = (mol/litre)/time
Final Answer:
The average rate of a reaction is defined as the change in concentration of a reactant or product divided by the time interval over which the change occurs.