The Gas Phase Reaction of Nitrogen Dioxide and Carbon Monoxide $\circ$

question 96

Multiple Choice

The gas phase reaction of nitrogen dioxide and carbon monoxide was found experimentally to be second-order with respect to NO₂, and zero-order with respect to CO below 25 ^$\circ$ C.
NO₂ + CO $\rarr$ NO + CO₂
Which one of the following mechanisms is consistent with the observed reaction order

• A) NO₂ + 2CO \(\rarr\) N + 2CO₂ fast
• N + NO₂ \(\rarr\) 2NO slow
• B) NO₂ + 2CO \(\rarr\)N + 2CO₂ slow
• N + NO₂ \(\rarr\) 2NO fast
• C) NO₂ + NO₂ \(\rarr\) NO₃ + NO fast
• NO₃ + CO \(\rarr\)NO₂ + CO₂ slow
• D) NO₂ + NO₂ \(\rarr\) NO₃ + NO slow
• \(NO_3 + CO \rarr NO_2 + CO_2\) fast

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