The Student Room Group

Alkanes and Alkenes

Why are both alkanes and alkenes able to from structural isomers.
Explain plsssss
Original post by Fa123123
Why are both alkanes and alkenes able to from structural isomers.
Explain plsssss

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Reply 2
Original post by ZizAndZaz
26682686-D845-4B12-95CB-9AFFF666B991.jpeg


The thing is I need it explained and pls I don’t get it
Original post by Fa123123
The thing is I need it explained and pls I don’t get it

Any Cyclo Alkanes can form the same structural formula with Alkene, as Alkene bonds with 2 Hydrogens, and Cyclo Alkanes bonds with 2 Hydrogen also. Hence what ever the structure, you will still see the same Molecular Formula, it’s only the layout that changes
Reply 4
Original post by Fa123123
Why are both alkanes and alkenes able to from structural isomers.
Explain plsssss

Four words:

butane methylpropane
but-1-ene methylpropene
Original post by Pigster
Four words:

butane methylpropane
but-1-ene methylpropene

Those are names 💁🏼*♀️
Reply 6
Original post by Pigster
Four words:

butane methylpropane
but-1-ene methylpropene


I don’t get what you mean?
Reply 7
Original post by ZizAndZaz
Any Cyclo Alkanes can form the same structural formula with Alkene, as Alkene bonds with 2 Hydrogens, and Cyclo Alkanes bonds with 2 Hydrogen also. Hence what ever the structure, you will still see the same Molecular Formula, it’s only the layout that changes


I don’t mean why they can form together I mean why both can form structural isomers
Original post by Fa123123
I don’t get what you mean?

Try drawing them out.

Essentially, they form isomers because we can sort of move groups around the molecule without changing the molecular formula of the molecule. For instance, with butene, the C=C bond can be at the end of the chain and at the middle (e.g. between the 2nd and 3rd carbons in the chain).
Reply 9
Original post by Fa123123
I don’t get what you mean?

butane (C4H10) and methylpropane (C4H10) are both alkanes.
but-1-ene (C4H8) and methylpropene (C4H8) are both alkenes.
Original post by ZizAndZaz
Those are names 💁🏼*♀️

The last I checked, names are words.

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