The temperature required for the dehydration of ethanol into ethene in the presence of H2SO4 is:
Correct answer: D. 180°C
- A. 130°C
- B. 175°C
- C. 170°C
- D. 180°C
Explanation
Dehydration of alcohols in to alkenes occur at 180°C in the presence of concentrated sulfuric acid.
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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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