Ozone Decomposition by UV
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2O3 → 3O2
نظرة عامة
UV-C radiation (< 240 nm) and UV-B (240–320 nm) break ozone back into molecular oxygen and atomic oxygen. This absorption of UV is precisely what protects life on Earth. The steady-state balance between ozone formation and decomposition maintains the ozone layer thickness.
المشاركون
| الدور | المادة | المعامل | الحالة |
|---|---|---|---|
| متفاعل | Ozone O₃ | 2 | (g) |
مثال من الحياة اليومية
Sunscreen with high SPF is needed because not all UV is filtered by ozone — the remaining UV-A and some UV-B still reach the surface.
الأهمية الصناعية
Understanding ozone photochemistry is critical for monitoring the ozone hole and predicting UV exposure levels worldwide.
الخصائص
- النوع
- Photochemical
- قابل للعكس
- لا
- الطاقة
- طارد للحرارة
- ΔH
- -285,4 kJ/mol