15-10 General Integrated Rate Problems
Chapter 15-10
University of Arkansas at Little Rock
Dr. Robert Belford and Suchita Desai




Question 1
1. What is the rate constant of a zero order reaction if it takes 87 seconds for a concentration of 0.32500M to decompose to 0.00387M?
(A)  0.5680M/s
(B)  0.0037M/s
(C)  -0.0037/s
(D)  0.0325/s
 
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Question 2
2. A compound of 0.0452M has a rate constant of 4.95 x 10-5 M/s and decays to 0.0042M. How long did this process take?
(A)  828s
(B)  651s
(C)  61s
(D)  2.16s
 
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Question 3
3. After 35 seconds, only 0.029M of the mixture is left. Find the concentration of the initial mixture at a rate constant of 0.68M-1s-1.
(A)  0.0094M
(B)  0.064M
(C)  0.541M
(D)  0.094M
 
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Question 4
4. For a first order reaction, in 4 minutes a solution went from 0.0800M to 0.0060M. What is the rate constant for the reaction?
(A)  5.10M/s
(B)  0.0108/s
(C)  0.0108M/s
(D)  5.10/s
 
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Question 5
5. Beginning with 0.5046M of a substance that has a rate constant of 0.085s-1. How much for the substance is left after 25 seconds?
(A)  0.2367M
(B)  1.441M
(C)  0.06M
(D)  0.684M
 
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Question 6
6. With a rate constant of .019M-1s-1, how long does it take a chemical to go from 0.0400M to 0.0020M?
(A)  525s
(B)  475s
(C)  25000s
(D)  1500s
 
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