Bromine water is an orange solution of bromine. It becomes colourless when it is shaken with an alkene. Alkenes can decolourise bromine water, but alkanes cannot. The slideshow shows this process.
This reaction proceeds at room temperature and does not require sunlight or UV radiation to initiate it. The rapid disappearance of the amber color of the bromine at room temperature is characteristic ...
Ultimately, alkenes contributed to nearly 90% of the O₃ during the episodes. The research highlights key alkene species— trans / cis -2-butene and propene—as major contributors to this ...