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Chemical Properties of Alcohols

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  • Key Points: Chemical Properties of Alcohols
CISCE: Class 10

key Points: Chemical Properties of Alcohols

  • Combustion: Alcohols burn in air to give CO₂, H₂O, and heat. Ethanol burns with a pale blue flame.
  • Oxidation: Alcohols oxidise to aldehydes and then to acids using acidified K₂Cr₂O₇ or KMnO₄.
  • Reaction with Sodium: Forms alkoxides and H₂ gas with effervescence (e.g., sodium ethoxide).
  • Esterification: React with acetic acid in the presence of conc. H₂SO₄ to form fruity-smelling esters.
  • Dehydration:
    - At 170°C → forms alkene (e.g., ethene)
    - At 140°C → forms ether (e.g., diethyl ether)
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