Dehydration of alcohols at low temperature and high acid concentration results in?
Correct answer: B. Ether
- A. Alkene
- B. Ether
- C. Carboxylic acid
- D. Aldehydes
Explanation
Correct option is B.Alcohols on dehydration can produce ethers as well as alkene under different conditions but mainly ether.Alcohol can be dehydrated to form either alkene ( higher temperature and excess acid) or ethers ( low temperature and excess acid).Dehydration of alcohol proceeds through the formation of carbonium ions. The carbonium ion can lose a proton to form alkene. The carbonium ion may be attacked by a fresh molecule of alcohol and form an oxonium ion which can then lose a proton to form ether.Usually, secondary and tertiary alcohols form alkene.
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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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