Asked by: Yarelis Janka
asked in category: General Last Updated: 10th April, 2020

What can Decolourise aqueous bromine?

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.

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In this regard, which does not Decolourise bromine water?

But one of the alkene which would not be decolourised by bromine water is benzene . As aromatic compounds are highly stable and tend to be stable . And addition of bromine across double bonds of the benzene may result in the loss of aromaticity which is not favourable.

Secondly, do aldehydes Decolourise bromine water? Ketones as such do not decolourise bromine water but their enolic forms do so. The percentage of the enol content depends on the presence of alpha hydrogens and the nature of solvent.

Beside this, does cyclohexane Decolourise bromine water?

Cyclohexane has no pi-unsaturation and is therefore not nucleophilic. It does not react with bromine unless energy in the form of light or heat is applied. In such a case a free-radical substitution reaction occurs. Cyclohexene is a typical alkene, and benzene and anisole are aromatic compounds.

Why do unsaturated hydrocarbons Decolourise bromine water?

Explanation: It's not just Cyclohexene, but ALL Alkene molecules that decolourise when they react with Bromine water. Alkenes contain a C=C double bond and thus we call them "unsaturated hydrocarbons". Bromine (Br2) breaks this C=C double bond and attaches itself to the Alkene molecule, forming an Alkane.

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