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.

More information: Hao Zeng et al, Modular alkene synthesis from carboxylic acids, alcohols and alkanes via integrated ...

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 ...

Complete combustion of alkenes produces carbon dioxide and water, provided there is a plentiful supply of oxygen. Incomplete combustion of alkenes occurs where oxygen is limited and produces water ...

This review summarizes the catalytic performance of various metal-based catalysts in the CO2-assisted oxidative dehydrogenation of light alkanes, with the goal of identifying catalyst systems that ...

It can convert fatty acids to 1-alkenes at the fastest rate currently possible. But the team found that the process was not very efficient—the enzyme would become inactivated after just a few ...

A major advance in alkene oligomerization catalysis was Brookhart’s 1995 report of highly active group 10 metal diimine systems. In contrast to nickel and palladium catalysts, the corresponding ...

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 ...