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Introduction to Reaction Mechanisms

AP Chemistry· difficulty 3/5

Two-step mechanism for ozone destruction. NO is consumed in step 1 and regenerated in step 2.

Step 1: NO + O3 -> NO2 + O2 Step 2: NO2 + O -> NO + O2 Overall: O3 + O -> 2 O2

What is the role of NO?

  • A

    Intermediate

  • B

    Reactant

  • C

    Catalyst

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  • D

    Product

Explanation

A catalyst is consumed in one step and regenerated in another, so it doesn't appear in the overall equation.

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