A Proposed Mechanism for the Photodecomposition of Ozone in the Atmosphere

question 107

Multiple Choice

A proposed mechanism for the photodecomposition of ozone in the atmosphere is:
Step 1: O₃(g) + hv $\rightarrow$ O₂(g) + O(g)
Step 2: O₃(g) + O(g) $\rightarrow$ 2 O₂(g)
Which of the following species is an intermediate?

• A) O₃
• B) hv
• C) O₂
• D) O
• E) This mechanism has no intermediates.

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