An average reaction rate is calculated as the change in the concentration of reactants or products over a period of time in the course of the reaction. An instantaneous reaction rate is the rate at a particular moment in the reaction and is usually determined graphically.
The reaction of compound A forming compound B was studied and the following data were collected:
Time (s) [A] (M)
a. What is the average reaction rate between 0 s and 1500 s?
b. What is the average reaction rate between 500 s and 1200 s?
c. What is the instantaneous rate of the reaction at t = 800 s?