Propane is an alkene. Describe the test for alkenes. Give the colour change in the test.

Explanation:

One test for Alkenes is testing with bromine water. This test can be used to tell the difference between an Alkanes and Alkenes. On a normal, any Alkene will turn brown bromine water to colourless because the bromine reacts with the double carbon-carbon bond. Also, the reaction takes place with unsaturated compounds that contains the double carbon-carbon bonds.

Conversely, when Alkanes go through the same test, there is no reaction with bromine water.

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