22) The chemical responsible for the brown color of photochemical smog is nitrogen dioxide. Nitrogen dioxide is a fairly stable molecule, that exists in the following equilibrium with colourless dinitrogen tetraoxide: 2NO2 (g) → N2O4 (g) AH -57.20 kJ/mol a. A scientist takes an air sample from downtown Toronto during the winter at 0°C, and finds the following equilibrium concentrations: [N2O4] = 1.8 X 10-7, [NO₂] = 5.59 X 10-5. What is the Keq for this reaction at 0°C? b. During the summer, the same scientist collects another air sample at 25°C, and finds the following equilibrium concentrations: [N2O4] = 4.0 X 10-8, [NO₂] = 7.78 X 10-4. What is the Keq for this reaction at 25°C? c. What do your results from a and b suggest when smog would be at its worst? What explains the difference in equilibrium between summer and winter?
22) The chemical responsible for the brown color of photochemical smog is nitrogen dioxide. Nitrogen dioxide is a fairly stable molecule, that exists in the following equilibrium with colourless dinitrogen tetraoxide: 2NO2 (g) → N2O4 (g) AH -57.20 kJ/mol a. A scientist takes an air sample from downtown Toronto during the winter at 0°C, and finds the following equilibrium concentrations: [N2O4] = 1.8 X 10-7, [NO₂] = 5.59 X 10-5. What is the Keq for this reaction at 0°C? b. During the summer, the same scientist collects another air sample at 25°C, and finds the following equilibrium concentrations: [N2O4] = 4.0 X 10-8, [NO₂] = 7.78 X 10-4. What is the Keq for this reaction at 25°C? c. What do your results from a and b suggest when smog would be at its worst? What explains the difference in equilibrium between summer and winter?
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter14: Chemical Equilibrium
Section: Chapter Questions
Problem 15P
Related questions
Question
Pls help.
![22) The chemical responsible for the brown color of photochemical smog is nitrogen dioxide. Nitrogen
dioxide is a fairly stable molecule, that exists in the following equilibrium with colourless dinitrogen
tetraoxide:
2NO2 (g) →
N2O4 (g)
AH -57.20 kJ/mol
a. A scientist takes an air sample from downtown Toronto during the winter at 0°C, and finds the
following equilibrium concentrations: [N2O4] = 1.8 X 10-7, [NO₂] = 5.59 X 10-5. What is the Keq
for this reaction at 0°C?
b. During the summer, the same scientist collects another air sample at 25°C, and finds the following
equilibrium concentrations: [N2O4] = 4.0 X 10-8, [NO₂] = 7.78 X 10-4. What is the Keq for this
reaction at 25°C?
c. What do your results from a and b suggest when smog would be at its worst? What explains the
difference in equilibrium between summer and winter?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F70562eea-c2fb-4751-9e42-c7c37c89fd29%2F57a65131-fa38-414b-88f4-676a58b803ee%2Fk539oks_processed.png&w=3840&q=75)
Transcribed Image Text:22) The chemical responsible for the brown color of photochemical smog is nitrogen dioxide. Nitrogen
dioxide is a fairly stable molecule, that exists in the following equilibrium with colourless dinitrogen
tetraoxide:
2NO2 (g) →
N2O4 (g)
AH -57.20 kJ/mol
a. A scientist takes an air sample from downtown Toronto during the winter at 0°C, and finds the
following equilibrium concentrations: [N2O4] = 1.8 X 10-7, [NO₂] = 5.59 X 10-5. What is the Keq
for this reaction at 0°C?
b. During the summer, the same scientist collects another air sample at 25°C, and finds the following
equilibrium concentrations: [N2O4] = 4.0 X 10-8, [NO₂] = 7.78 X 10-4. What is the Keq for this
reaction at 25°C?
c. What do your results from a and b suggest when smog would be at its worst? What explains the
difference in equilibrium between summer and winter?
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps with 1 images
Recommended textbooks for you
Principles of Modern Chemistry
Chemistry
ISBN:
9781305079113
Author:
David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:
Cengage Learning
Chemistry: The Molecular Science
Chemistry
ISBN:
9781285199047
Author:
John W. Moore, Conrad L. Stanitski
Publisher:
Cengage Learning
General Chemistry - Standalone book (MindTap Cour…
Chemistry
ISBN:
9781305580343
Author:
Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:
Cengage Learning
Principles of Modern Chemistry
Chemistry
ISBN:
9781305079113
Author:
David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:
Cengage Learning
Chemistry: The Molecular Science
Chemistry
ISBN:
9781285199047
Author:
John W. Moore, Conrad L. Stanitski
Publisher:
Cengage Learning
General Chemistry - Standalone book (MindTap Cour…
Chemistry
ISBN:
9781305580343
Author:
Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:
Cengage Learning
Chemistry for Engineering Students
Chemistry
ISBN:
9781337398909
Author:
Lawrence S. Brown, Tom Holme
Publisher:
Cengage Learning
Chemistry: An Atoms First Approach
Chemistry
ISBN:
9781305079243
Author:
Steven S. Zumdahl, Susan A. Zumdahl
Publisher:
Cengage Learning