Average rate of reaction
a. What is the average reaction rate between 0 s and 1500 s?
***Since A is a reactant, the rate with respect to A is negative (–) since we’re losing reactants.
= 1.12×10‒4 M/s
b. What is the average reaction rate between 500 s and 1200 s?
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)
0. 0.184
200. 0.129
500. 0.069
800. 0.031
1200. 0.019
1500. 0.016
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?
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