Ozone (O₃) in the Atmosphere Can Be Converted to Oxygen

question 65

Multiple Choice

Ozone (O₃) in the atmosphere can be converted to oxygen gas by reaction with nitric oxide (NO) . (Nitrogen dioxide is also produced in the reaction.) What is the enthalpy change when 8.50 L of ozone at a pressure of 1.00 atm and 25°C reacts with 12.00 L of nitric oxide at the same initial pressure and temperature (R = 0.0821 L atm/mol K) ? [ΔH°_f(NO) = 90.4 kJ/mol; ΔH°_f(NO₂) = 33.85 kJ/mol; ΔH°_f(O₃) = 142.2 kJ/mol]

• A) -69.1 kJ
• B) -19.7 kJ
• C) -1690 kJ
• D) -97.6 kJ
• E) -167 kJ

---

Definitions:

Computer Graphics

The use of computers to create, process, and manipulate visual content and imagery.

Real-world Situations

Scenarios or circumstances that occur in everyday life outside of controlled or artificial environments.

Systematic Desensitization

A behavioral therapy technique used to reduce phobias and anxiety through gradual exposure to the feared object or situation while practicing relaxation techniques.

Relaxation Training

Techniques designed to reduce stress and anxiety, promoting physical and mental calm.