0
If you used a permanganate test to distinguish between an alkane and an alkene which would retain the purple color?
Wiki User
∙ 6y agoWant this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
What simple chemical test will distinguish an alkane from others?
Use bromine water (Br2) or acidified permanganate (H+/MnO4-) With permanganate: add the permanganate to the alkane and no reaction will occur, add the permanganate to the alkene and you will form a diol the solution will also turn from purple to colourless. With bromine water: add the bromine water to the alkane (plus you need sunlight) and you get a substitution reaction, this is a slow reaction. Add the bromine water to the alkene and you get an immediate addition reaction (this one does not need sunlight). When bromine water reacts with an alkene it is decolourised, the reddish brown bromine water turns from brown to colourless. This is because alkenes are unsaturated and contain a carbon to carbon double bond. If you did the bromine water test in a dark place say a cupboard then the alkene would decolourise but the alkane wouldn't because it needs UV/sunlight in order to react. in practice the cupboard is not necessary as the speed of decolourisation is so much faster with the alkene.
What happens when a reaction take place between an alkene and alkane?
If alkene is straight chain and alkane has one tertiary carbon atom then alkylation of alkene takes place and a substituted alkane is produced.
Is it possible for an alkane to be an isomer of an alkene?
Yes, if the alkane is cyclic and the alkene is not.
Is a 2-butene an alkane or an alkene or an alcohol?
2-butene is an alkene
Is cyclopentene an alkane alkene or alcohol?
Its a cycloalkene
What simple chemical test will distinguish an alkane from others?
Use bromine water (Br2) or acidified permanganate (H+/MnO4-) With permanganate: add the permanganate to the alkane and no reaction will occur, add the permanganate to the alkene and you will form a diol the solution will also turn from purple to colourless. With bromine water: add the bromine water to the alkane (plus you need sunlight) and you get a substitution reaction, this is a slow reaction. Add the bromine water to the alkene and you get an immediate addition reaction (this one does not need sunlight). When bromine water reacts with an alkene it is decolourised, the reddish brown bromine water turns from brown to colourless. This is because alkenes are unsaturated and contain a carbon to carbon double bond. If you did the bromine water test in a dark place say a cupboard then the alkene would decolourise but the alkane wouldn't because it needs UV/sunlight in order to react. in practice the cupboard is not necessary as the speed of decolourisation is so much faster with the alkene.
What happens when a reaction take place between an alkene and alkane?
If alkene is straight chain and alkane has one tertiary carbon atom then alkylation of alkene takes place and a substituted alkane is produced.
Is it possible for an alkane to be an isomer of an alkene?
Yes, if the alkane is cyclic and the alkene is not.
Is turpentine an alkane or alkene?
It is an alkene
Is a 2-butene an alkane or an alkene or an alcohol?
2-butene is an alkene
Is 1-nonene an alkane alkene or an alcohol?
alkene
Is 1 nonene alkane alkene or alcohol?
Alkene
Is cyclopentene an alkane alkene or alcohol?
Its a cycloalkene
Is 3-methyloctane an alkane an alkene or alcohol?
alkane
An alkene can be combined with chlorine and bromine in a?
Alkene + Cl2 or Br2 --> Adducts (addition products) dichloor alkane, dibroom alkane
What makes an alkene not an alkane?
unsaturation
Is an alkene to an alkane a oxidation reaction?
no
