15-9: Second Order Integrated Rate Problems
Chapter 15
University of Arkansas at Little Rock
Dr. Robert Belford



All the questions in this quiz relate to the following second order reaction:

2NOBr(g) --> 2NO(g) + Br(g)

Question 1
What is the rate constant if it takes 80.25 seconds for a 0.90M mixture to decompose to 0.25M?
(A)  0.68s-1M-1
(B)  0.0078s-1M-1
(C)  0.036s-1M-1
(D)  none of the above
 
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Question 2
How long does it take for the reaction in question 1 to decompose to 0.10M?
(A)  520 sec
(B)  250 sec
(C)  32 sec
(D)  none of the above
 
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Question 3
How long does it take for the reactant in question 1 to decompose to 25%?
(A)  640 sec
(B)  93 sec
(C)  27 sec
(D)  none of the above
 
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Question 4
How long does it take for 25% of the reactant in question 1 to be consumed?
(A)  10. sec
(B)  98 sec
(C)  31 sec
(D)  none of the above
 
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Question 5
What is [NOBr] of a .85M [NOBr]solution after 3 minutes?
(A)  1.3M
(B)  0.90M
(C)  0.0080M
(D)  None of the Above
 
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Question 6
Calculate the initial [NOBr] if [NOBr]=0.0080M after 15 minutes.
(A)  0.11M
(B)  0.011M
(C)  2.1M
(D)  none of the above
 
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