Respuesta :

Ethene + Cl₂ gives out 1,2 dichloroethane (C2H4Cl2).

When ethene gas reacts with water it hydrates to form ethyl alcohol. When this ethyl alcohol reacts with sulfuric acid it is dehydrated to ethene again. Halogenation reactions of alkenes specifically bromination or chlorination, are reactions in which a dihalide such as Cl 2 or Br 2 is added to the molecule after the carbon-carbon double bond is broken.

Halides attach to adjacent carbons from opposite sides of the molecule. A reaction in which a molecule of a reagent adds across a double or triple bond of an unsaturated compound is called an addition reaction. The presence of double bonds makes the molecule reactive. Since ethene contains a double bond it undergoes additional reactions.

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