The catalyst used for the dehydration of alcohols is
Correct answer: B. Concentrated H2SO4 at 180 C
- A. Concentrated HNO3 at 14 C
- B. Concentrated H2SO4 at 180 C
- C. Hot H3PO4 at 18 C
- D. ZnCl2 at 45 C
Explanation
The acid catalysts normally used in alcohol dehydration are either concentrated sulfuric acid or concentrated phosphoric (V) acid, H3PO4. This has been mentioned in PTB.
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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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