**Ozone Formation in the Upper Atmosphere: A Thermodynamic Analysis**In the upper atmosphere, ozone (O₃) is produced from oxygen gas (O₂) via the following reaction:\[ 3O_2(g) \rightarrow 2O_3(g) \]---### Thermodynamic Calculations#### Calculate ΔS° for the Reaction- **Value:** -141 J/K (rounded to 3 significant figures) *You are correct. Your receipt no. is 165-9191.*#### Calculate ΔG° for Ozone Formation- **Value:** 326 kJ (rounded to 3 significant figures) *You are correct. Your receipt no. is 165-142.*#### Calculate ΔH° for Ozone Formation- **Value:** 285 kJ (rounded to 3 significant figures) *You are correct. Your receipt no. is 165-5574.*---### Spontaneity of Ozone ProductionAssume an atmosphere where the partial pressure of O₂, \( p(O_2) \), is 0.180 atm, and the temperature, \( T \), is 298 K. Calculate the pressure of O₃ at which ozone production will be spontaneous. Enter your answer in atm.- **Calculated Value:** 2.67e-32 atm (Note: this answer is marked as incorrect.)Use the formula:\[ ΔG = ΔG° + RT \ln Q \]- Plug in the known \( ΔG° \), \( T \), and \( p(O_2) \) for an overall \( ΔG = 0 \), and solve for \( p(O_3) \).*Be careful not to round off on your calculations prematurely.*---**Note:** This discussion is closed.

The balanced reaction is :3O2(g) →2O3(g)→∆Grxn° = Σ Gf (products)°- Σ Gf (reactants)°…

Alec F. Litvin (Student section: 65A) CHEM 111 - Fall 2020 Main Menu Contents Grades Groups Course Contents ».. » Homework Set 7 » t25p53a 1O Timer In the upper atmosphere, ozone is produced from oxygen gas in the following reaction. 302(g) - 203(g) Calculate AS° for this reaction. Enter your answer in J/K and give 3 significant figures. -141 You are correct. Your receipt no. is 165-9191 Previous Tries Calculate AG° for ozone formation. (Enter your answer in k) and give 3 significant figures). 47 326 You are correct. Your receipt no. is 165-142 0 Previous Tries Calculate AH° for ozone formation. (Enter your answer in k) and give 3 significant figures). 285 You are correct. Your receipt no. is 165-5574 Previous Tries Assume an atmosphere where p(02) = 0.180 atm, and where T = 298 K. Below what pressure of O3 will ozone production be spontaneous? (Enter your answer in atm). 2.67e-32 Use the formula AG=AGo + RTINQ for this reaction, and plug in the known AGo, T and p(02) for an overall AG=0, and solve for p(O3). Be careful not to round off on your Submit Answer Incorrect. Tries 1/99 Previous Tries This discussion is closed.

Alec F. Litvin (Student section: 65A) CHEM 111 - Fall 2020 Main Menu Contents Grades Groups Course Contents ».. » Homework Set 7 » t25p53a 1O Timer In the upper atmosphere, ozone is produced from oxygen gas in the following reaction. 302(g) - 203(g) Calculate AS° for this reaction. Enter your answer in J/K and give 3 significant figures. -141 You are correct. Your receipt no. is 165-9191 Previous Tries Calculate AG° for ozone formation. (Enter your answer in k) and give 3 significant figures). 47 326 You are correct. Your receipt no. is 165-142 0 Previous Tries Calculate AH° for ozone formation. (Enter your answer in k) and give 3 significant figures). 285 You are correct. Your receipt no. is 165-5574 Previous Tries Assume an atmosphere where p(02) = 0.180 atm, and where T = 298 K. Below what pressure of O3 will ozone production be spontaneous? (Enter your answer in atm). 2.67e-32 Use the formula AG=AGo + RTINQ for this reaction, and plug in the known AGo, T and p(02) for an overall AG=0, and solve for p(O3). Be careful not to round off on your Submit Answer Incorrect. Tries 1/99 Previous Tries This discussion is closed.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Thermochemistry

Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.

Question

**Ozone Formation in the Upper Atmosphere: A Thermodynamic Analysis**

In the upper atmosphere, ozone (O₃) is produced from oxygen gas (O₂) via the following reaction:

\[ 3O_2(g) \rightarrow 2O_3(g) \]

---

### Thermodynamic Calculations

#### Calculate ΔS° for the Reaction
- **Value:** -141 J/K (rounded to 3 significant figures)

*You are correct. Your receipt no. is 165-9191.*

#### Calculate ΔG° for Ozone Formation
- **Value:** 326 kJ (rounded to 3 significant figures)

*You are correct. Your receipt no. is 165-142.*

#### Calculate ΔH° for Ozone Formation
- **Value:** 285 kJ (rounded to 3 significant figures)

*You are correct. Your receipt no. is 165-5574.*

---

### Spontaneity of Ozone Production

Assume an atmosphere where the partial pressure of O₂, \( p(O_2) \), is 0.180 atm, and the temperature, \( T \), is 298 K. Calculate the pressure of O₃ at which ozone production will be spontaneous. Enter your answer in atm.

- **Calculated Value:** 2.67e-32 atm (Note: this answer is marked as incorrect.)

Use the formula:
\[ ΔG = ΔG° + RT \ln Q \]

- Plug in the known \( ΔG° \), \( T \), and \( p(O_2) \) for an overall \( ΔG = 0 \), and solve for \( p(O_3) \).

*Be careful not to round off on your calculations prematurely.*

---

**Note:** This discussion is closed.

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