The reaction of C2H5OH with conc. H2SO4 does not give_________?
Correct answer: C. Acetylene
- A. Ethene
- B. Diethyl ether
- C. Acetylene
- D. Ethyl hydrogen sulphate
Explanation
Ethanol with concentrated H2SO4 can form ethene by dehydration, diethyl ether at a lower temperature, and ethyl hydrogen sulfate by reaction with sulfuric acid. It does not normally produce acetylene, which would require more extensive dehydrogenation than this reaction provides. Students may choose ethene if they remember only one ethanol dehydration product, but ethene is in fact formed.
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About Alcohols
Alcohols contain a hydroxyl group attached to a saturated carbon atom and are classified as primary, secondary or tertiary. Their nomenclature, hydrogen bonding, acidity, oxidation, dehydration, reaction with sodium and conversion to haloalkanes are covered, along with the distinction between alcohols and phenols, where the hydroxyl group is attached directly to an aromatic ring.
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