_ Quiz Submissions - Exam 2 - CHEM 152 SP21 Exams - University of Arizona.pdf

5/6/2021 : Quiz Submissions - Exam 2 - CHEM 152 SP21 Exams - University of Arizona
Quiz Submissions - Exam 2
Jonathan Buyze (username: jonathanbuyze)
Attempt 1
Written: Feb 26, 2021 5:30 PM - Feb 26, 2021 6:29 PM
Submission View
Question 1 1 / 1 point
Given the D G vs T and K vs T plots, explain what happens to this reaction as temperature is increased.
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Question 2 1 / 1 point
If the activation energy for a reaction is 60.6 kJ/mole, how many times faster is the reaction at 400 K than 300 K?
Question 3 1 / 1 point
Which of the following mechanisms would be consistent with this rate vs concentration plot?
Mechanism I
Step 1: 2NO
2
(g) à NO
3
(g) + NO(g) slow
Step 2: NO
3
(g) + CO(g) à NO
2
(g) + CO
2
(g) fast
Mechanism II
Step 1: NO
2
(g) + Cl
2
(g) à ClNO
2
(g) + Cl(g) slow
Step 2: NO
2
(g) + Cl(g) à ClNO
2
(g) fast
Mechanism III
Step 1: NO
2
(g) + Cl
2
(g) à ClNO
2
(g) + Cl(g) fast
Step 2: NO
2
(g) + Cl(g) à ClNO
2
(g) slow
Mechanism III only
Mechanism I and II
Mechanism I and III
Mechanism I only
Question 4 1 / 1 point
What is the most likely Reaction Path diagram for the mechanism below?

5/6/2021 : Quiz Submissions - Exam 2 - CHEM 152 SP21 Exams - University of Arizona
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Question 5 1 / 1 point
Given the rate law below for a reaction, if the rate of the reaction is 0.65 M/s and the concentrations of NO and H
2
are both 0.25 M, what is the rate constant (with units)?