Ozonolysis
Ozonolysis of alkenes followed by reduction with Zn/H₂O produces:
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About This Question
- Subject
- chemistry
- Chapter
- hydrocarbons
- Topic
- ozonolysis
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
Aldehydes and/or ketones
Ozonolysis is a method used to locate the position of double bonds in alkenes.
- Ozone Addition: O3 adds across the double bond to form an unstable ozonide.
- Reductive Cleavage: The ozonide is treated with Zn and H2O. The zinc prevents the formation of H2O2 (which would oxidize products to acids).
- The double bond is 'clipped' and replaced by oxygen atoms (C=O).
- Result: Depending on the substitution, aldehydes or ketones are produced.
This easy difficulty chemistry question is from the chapter hydrocarbons, covering the topic of ozonolysis. It appeared in the 2025 exam.
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