Of the Reactions Involved in the Photodecomposition of Ozone (Shown

question 19

Multiple Choice

Of the reactions involved in the photodecomposition of ozone (shown below) ,which are exothermic? 1.O₂ (g) + hν → O (g) + O (g)
2.O (g) + O₂ (g) + M (g) → O₃ (g) + M^* (g)
3.O₃ (g) + hν → O₂ (g) + O (g)
4.O (g) + O (g) + M (g) → O₂ (g) + M^* (g)

• A)2 and 4
• B)1 and 3
• C)1, 2, and 4
• D)2 only
• E)all of them

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