Nitrogen Dioxide Decomposes to Nitric Oxide and Oxygen Via the Reaction

question 82

Multiple Choice

Nitrogen dioxide decomposes to nitric oxide and oxygen via the reaction: 2NO₂ → 2NO + O₂
In a particular experiment at 300 °C, [NO₂] drops from 0.0100 to 0.00550 M in 100 s. The rate of appearance of O₂ for this period is __________ M/s.

• A)2.3 × 10^-5
• B)4.5 × 10^-5
• C)9.0 × 10^-5
• D)4.5 × 10^-3
• E)9.0 × 10^-3

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