Question
Download Solution PDF1 mm layer of pure ozone gas around the earth at normal temperature and pressure is equivalent to:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is 100 DU.
Key Points
- Ozone in the atmosphere is measured in "Dobson" units.
- The number of ozone molecules needed to produce a layer of pure ozone 0.01 millimetres thick at a temperature of 0 degrees Celsius and an atmospheric pressure of one Dobson unit.
- As we know: 0.01mm = 1 Dobson unit.
- Then 0.50mm = 50 DU
- So, 1mm = 100 DU.
Thus, a 1 mm layer of pure ozone gas around the earth at normal temperature and pressure is equivalent to 100 DU.
Additional Information
- The ozone layer is typically around 300 Dobson Units thick across the surface of the Earth.
Last updated on Jun 6, 2025
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