Alekenes Chemical Properties

Alkenes undergo electrophilic addition reactions.
They also participate in oxidation, polymerization and some replacement reactions.

Addition

Halogen acids
Water
Hypohalous acid
Sulphuric acid

Oxidation reactions

Combustion
Alkens burn in oxygen or air to give carbon dioxide , water and large amount of heat.

Hydroboration oxidation
Potassium permanganate - cold and hot
Catalytic oxidation
Reaction with Ozone

Reduction

Polymerisation
of ethene
of vinyl chloride
of styrene
of tetrafluoroethylene


Addition of sulphuric acid

Cold and concentrated sulphuric acid adds to alkenes forming alkyl hydrogen sulphate.

This adds to water to give alcohol. Actually the final reaction is same as acid catalysied hydration of alkenes.