The Rate Law for the Reaction 2NO₂ + O₃

question 12

Multiple Choice

The rate law for the reaction 2NO₂ + O₃  N₂O₅ + O₂ is rate = k[NO₂][O₃]. Which one of the following mechanisms is consistent with this rate law?

• A)NO₂ + NO₂  N₂O₄ (fast) N₂O₄ + O₃  N₂O₅ + O₂ (slow)
• B)NO₂ + O₃  NO₅ (fast) NO₅ + NO₅  N₂O₅ + ⁵/₂O₂ (slow)
• C)NO₂ + O₃  NO₃ + O₂ (slow) NO₃ + NO₂  N₂O₅ (fast)
• D)NO₂ + NO₂  N₂O₂ + O₂ (slow) N₂O₂ + O₃  N₂O₅ (fast)

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Definitions:

RNA Interference

Mechanism in which RNA molecules interfere with gene expression by preventing translation of specific mRNAs.

RNA Processing And Transport

The series of modifications RNA molecules undergo after transcription, including splicing, editing, and transport out of the nucleus to the cytoplasm for translation.

Repressor

A protein that binds to specific sites on DNA, preventing the transcription of certain genes and regulating gene expression.

RNA Polymerase

An enzyme responsible for synthesizing RNA from a DNA template, playing a crucial role in gene transcription.