samuelum1
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I'm doing some organic chemistry questions and I am stuck.
Here are the questions:

1)State the physical properties of Alkenes that allow them to be separated from a mixture by fractional distillation?

2)Name a branches Isomer of Pent-1-ene?

3) A use of ethene?

4)What are the positional Isomers of :
Propan-1-ol
Pent-2-ene
1-Chloropropane?

5) One type of useful solid material that could be formed from alkenes?

Thank you very much! Please reference your answers with the number of the question so I know which question each answer belongs to! Thanks Guys!
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mynameisntbobk
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(Original post by samuelum1)
I'm doing some organic chemistry questions and I am stuck.
Here are the questions:

1)State the physical properties of Alkenes that allow them to be separated from a mixture by fractional distillation?

2)Name a branches Isomer of Pent-1-ene?

3) A use of ethene?

4)What are the positional Isomers of :
Propan-1-ol
Pent-2-ene
1-Chloropropane?

5) One type of useful solid material that could be formed from alkenes?

Thank you very much! Please reference your answers with the number of the question so I know which question each answer belongs to! Thanks Guys!

1. Boiling point. Read over the process if you don't understand it.

2. Hint: you could have a cyclic compound (not sure if methylcyclobutane counts as a branched molecule, so literally draw out the alkene, and move one of the methyl groups to make a branch)

3. Pretty sure you can name a use.

4. In each of them, move the position of the functional group. My suggestion is to draw it out first then work it out

5. Hint: think about polymers
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CurtisDean
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(Original post by samuelum1)
I'm doing some organic chemistry questions and I am stuck.
Here are the questions:

1)State the physical properties of Alkenes that allow them to be separated from a mixture by fractional distillation?

2)Name a branches Isomer of Pent-1-ene?

3) A use of ethene?

4)What are the positional Isomers of :
Propan-1-ol
Pent-2-ene
1-Chloropropane?

5) One type of useful solid material that could be formed from alkenes?

Thank you very much! Please reference your answers with the number of the question so I know which question each answer belongs to! Thanks Guys!


1) Alkenes have double bonds. Also, there are different intermolecular forces that are present between alkenes, such as VDW. Different chain lengths, and branched alkenes have different boiling points as a result of the varied amount of Inter molecular forces. This allows alkenes to be separated (mixtures of alkenes) via fractional distillation

2) 3-methylbut-1-ene; methyl groups are often the first things i think about changing around when a question asks for branches

3) google?

4) not sure :0

5) polymers, can be made from the addition polymerisation of alkenes. Such as PTFE, aka Teflon. It is made from an 1,2-tetrafluoroethene

There are many more, that aren't only polymers. The chemguide is really useful.


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