What can alkenes be used for?

Jan 31, 2017

Fot quite a lot of things, because the double bond is reasonably reactive.

Explanation:

It can be broken open in an addition reaction like
$C {H}_{2} = C {H}_{2} + C {l}_{2} \to C H C l - C H C l$

Even water can react (given the right circumstances):
$C {H}_{2} = C {H}_{2} + {H}_{2} O \to C {H}_{3} - C {H}_{2} - O H$
to make commercial ethanol.

The double bond may also be opened and react with another open bond:
$\ldots . C {H}_{2} = C {H}_{2} + C {H}_{2} = C {H}_{2} + C {H}_{2} = C {H}_{2} + \ldots .$
$- C {H}_{2} - C {H}_{2} - C {H}_{2} - C {H}_{2} - C {H}_{2} - C {H}_{2} - \ldots .$
This is called polymerisation, and this how (in this case) you make polythene (from poly-ethene)