Which of the following method is used to prepare Ethylene glycol from ethene?
Correct answer: B. Hydroxylation
- A. Dehydration
- B. Hydroxylation
- C. Hydration
- D. Luca's test
Explanation
When ethene is subjected to 'hydroxylation' in the presence of cold and dilute alkaline potassium permanganate solution, the addition of hydroxide ions takes place across the double bond of ethene. It results in the formation of 'ethylene glycol'.
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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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