Arrhenius Equation
Chapter 15-5

Dr. Robert Belford & Xiaomin Tu




Question 1
A first-order reaction has a rate constant of 4.4x10-3s-1 at 350K and a rate constant of 9.8x10-2s-1 at 580K. What is the activation energy?
(A)  12.8KJ
(B)  18.8KJ
(C)  22.8KJ
(D)  none of the above
 
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Question 2
A reaction with activation energy of 120kJ/mol has a rate constant of 0.25s-1 at 310K. What will be the temperature for the rate constant to be doubled?
(A)  300 K
(B)  315 K
(C)  325 K
(D)  none of the above
 
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Question 3
The rate constant of a reaction increases by a factor of 10.0 when the temperature increases from 300K to 330K. What is the activation energy of the reaction?
(A)  63.2kJ
(B)  78.9KJ
(C)  85.2kJ
(D)  none of the above
 
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Question 4
The rate constant for a reaction is 1.5x10-4M-1s-1 at 100 0C, and 1.2x10-3M-1s-1 at 150 0C. What is the energy of activation?
(A)  38.0kJ
(B)  54.6kJ
(C)  78.5kJ
(D)  none of the above
 
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Question 5
For the reaction in Q4, what would the rate constant (in M-1s-1) be at 200 0C?
(A)  0.0070
(B)  0.0064
(C)  0.064
(D)  none of the above
 
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