DEHYDRATION

• WHAT IS DEHYDRATION?

  elimination of alcohols
• WHAT IS PRODUCED IN ELIMINATION OF ALCOHOLS/ DEHYDRATION?

  alkene + water
• WHAT DOES DEHYDRATION REQUIRE?

  • excess, hot, concentrated sulfuric acid

  OR

  • passing vapours over heated aluminium oxide

  OR

  • alternative dehydrating agent (e.g. phosphoric (V) acid)
• WHAT MUST AN ALCOHOL HAVE TO BE DEHYDRAYED?

  H atom on the C atom next to the OH group
• WHAT ARE THE CONDITIONS FOR DEHYDRATION (ALUMINIUM OXIDE)?

  • Al2O3
  • 600K
• HOW IS ETHENE PRODUCED?

  dehydrating ethanol