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: [[Alkene Test|Testing for '''alkenes''']] can be done by adding them to [[Bromine Water]]. If the [[Bromine Water]] turns from orange to colourless, then an [[alkene]] is present. During this test the [[Bromine]] [[Chemical Reaction|react]]s with the [[alkene]] to form a [[Bromoalkane]].
: [[Ethene]] + [[Bromine]] → [[Dibromoethane]]
: C<sub>2</sub>H<sub>4</sub> + Br<sub>2</sub> -> → C<sub>2</sub>H<sub>4</sub>Br<sub>2</sub>
===Examples===