The alkenes can be formed by alcohols in the presence of
Correct answer: D. Al2O3
- A. acidified KMnO4
- B. acidified K2Cr2O7
- C. acidified CuCl2
- D. Al2O3
Explanation
Alcohols can be converted into alkenes through a dehydration reaction, which is often catalyzed by an acidic medium or a suitable reagent. In this case, aluminum oxide (Al2O3) acts as a catalyst to promote the elimination of water from the alcohol, resulting in the formation of an alkene. The other options, such as acidified KMnO4, K2Cr2O7, and CuCl2, are primarily oxidizing agents and do not facilitate the dehydration process necessary for alkene formation. Therefore, they are not suitable reagents for this reaction.
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About Alcohols and Phenols
Alcohols are classified as primary, secondary or tertiary and studied through their hydrogen bonding, acidity, oxidation and reactions with active metals, acids and halogenating agents. Phenols require separate treatment because the hydroxyl group is attached to an aromatic ring, making their acidity and electrophilic substitution different from ordinary alcohols.
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