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

question 11

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 8.50L of ozone at a pressure of 1.00 atm and 25 ^$\circ$ C reacts with 12.00 L of nitric oxide at the same initial pressure and temperature [ $\Delta$ H ^$\circ$ _f(NO) = 90.4 kJ/mol; $\Delta$ H ^$\circ$ _f(NO₂) = 33.85 kJ/mol; $\Delta$ H ^$\circ$ _f(O₃) = 142.2 kJ/mol]

• A) -1690 kJ
• B) -167 kJ
• C) -97.6 kJ
• D) -69.2 kJ
• E) -19.7 kJ

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Definitions:

Cumulative Effect

The aggregate impact of an accounting change or policy on a company's financial statements over time.

Average Cost

A method for inventory and cost of goods sold valuation, calculated by dividing the total cost by the number of items.

LIFO Method

Last In, First Out method; an inventory valuation technique where the most recently produced items are recorded as sold first.

Prospective Treatment

An approach in accounting where changes are applied to transactions and events from a specific date forward.