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Example Questions
Example Question #1 : Integrated Rate Laws
The rate constant for a second-order reaction is 0.15 M-1s-1. If the initial concentration of the reactant is 0.30 M, how long does it take for the concentration to decrease to 0.15 M?
253 second
22.2 seconds
88.8 seconds
11.1 seconds
44.4 second
22.2 seconds
Example Question #2 : Integrated Rate Laws
Based on the figure above, what is the order of reaction?
Second Order
Third Order
First order
Squared Order
Zero Order
First order
For a first order reaction, the ln [A]t is linear with t.
Example Question #1 : Integrated Rate Laws
A compound decomposes by a first-order process. If 25.0% of the compound decomposes in 60 minutes, the half-life of the compound is?
180 minutes
120 minutes
198 minutes
65 minutes
145 minutes
145 minutes
Example Question #111 : Thermochemistry And Kinetics
Cyclopentane is unstable and decomposes by a first order reaction. The rate constant for this reaction is 9.5 s-1. What is the half life of the reaction?
0.0582 seconds
0.0729 second
0.132 seconds
0.0314 seconds
0.0614 seconds
0.0729 second
Example Question #112 : Thermochemistry And Kinetics
The half life of a first order reaction is 1.5 hours. What is the rate constant of this reaction?
0.21
0.75
1.5
0.46
0.52
0.46
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