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    Hey I can't work out the difference for the following 2 Q's:

    Draw and name a position isomer of but-1-ene
    Draw and name a functional group isomer of but-1-ene

    I know there should be a double bond somewhere. But can't draw the flipping things

    any help would be great :yy:

    oh and rep offered.:o:
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    Positional isomer means the position of the double bond is different. So a positional isomer would be but-2-ene.

    A functional group isomer has the same molecular formula, but they have different functional groups. e.g ethanol and ethoxyethane
    A functional group isomer of but-1-ene would be cyclobutane.
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    thanks!!!!!

    we haven't touched much on the functional group isomers yet..that's why twas confusing :rolleyes: :p:
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    Oh btw could you just elaborate a bit more on how you came to call it cyclobutane ?
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    Don't worry, it's pretty awkard to learn especially if you haven't covered much Organic Chemistry. :p:

    The isomer is called cyclobutane because they both have the same molecular formula  C_4H_8 but they have different functional groups and belong to different homogolous series. Cyclobutane is an alkane, whereas but-1-ene is an alkene. I think it's the only possible functional group isomer of but-1-ene, that's why.
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    (Original post by fait)
    I think it's the only possible functional group isomer of but-1-ene, that's why.
    There's one other - methylcyclopropane
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    (Original post by fait)
    Don't worry, it's pretty awkard to learn especially if you haven't covered much Organic Chemistry. :p:

    The isomer is called cyclobutane because they both have the same molecular formula  C_4H_8 but they have different functional groups and belong to different homogolous series. Cyclobutane is an alkane, whereas but-1-ene is an alkene. I think it's the only possible functional group isomer of but-1-ene, that's why.
    Hang on, is cyclobutane an alkane? I thought it was saturated, but not belonging to the homologus series of alkanes (i.e. does not adhere to the CnH2n+2 formula).
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    (Original post by Malsi101)
    Oh btw could you just elaborate a bit more on how you came to call it cyclobutane ?
    It's because the carbon atoms are arranged in such a way that they form a cycle. For more information: http://en.wikipedia.org/wiki/Cyclobutane
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    argghhhhh confusing although your explanations were great and simple :o:
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    ahaaa right thanks!!!!!!!!
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    (Original post by Sanjetti)
    Hang on, is cyclobutane an alkane? I thought it was saturated, but not belonging to the homologus series of alkanes (i.e. does not adhere to the CnH2n+2 formula).
    You are correct. It belongs to the homologous series of cycloalkanes :yep:
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    What syllabus are you doing?

    all i had to do was cis-trans/geometric isomers, and structural isomers. and i'm doing a2 right now...
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    (Original post by IChem)
    You are correct. It belongs to the homologous series of cycloalkanes :yep:
    Ah ok!

    So many chemistry whizzes on TSR
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    (Original post by yoshifumu)
    What syllabus are you doing?

    all i had to do was cis-trans/geometric isomers, and structural isomers. and i'm doing a2 right now...
    Isn't the new AS all a new syllabus?

    Although I did what (s)he is doing at the start, then it all got forgotten by the end of AS.
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    (Original post by Sanjetti)
    Ah ok!

    So many chemistry whizzes on TSR
    So many everything wizzes on TSR! I wish I were as good at maths as half of the people on here!
 
 
 
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