O3 reacts with C2H4 to form ozonide, while on further hydrolysis it forms _________?
Correct answer: B. HCHO
- A. Ethylene oxide
- B. HCHO
- C. Ethylene glycol
- D. Ethyl alcohol
Explanation
Ethene reacts with ozone to form an ozonide, and hydrolysis of this ozonide cleaves the C=C bond. Each carbon of ethene becomes a methanal molecule, HCHO, so formaldehyde is formed. The likely mistake is choosing ethylene glycol because ordinary hydration or a different oxidation pathway can add hydroxyl groups, but ozonolysis cleaves the double bond instead.
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About Alkenes
Alkenes are unsaturated hydrocarbons containing a carbon-carbon double bond with sigma and pi components and restricted rotation. Their reactions include electrophilic addition of hydrogen, halogens, hydrogen halides and water, with Markovnikov orientation, oxidation, combustion and polymerisation, while their preparation commonly involves elimination from alkyl halides or alcohols.
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