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    hi, just a quick question
    a practical about oxidising alcohols...
    Orgainc compound C turns bromine water colourless...
    What organic compound turns bromine water colourless??

    thnx for ur help
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    (Original post by Princess Kawaii)
    hi, just a quick question
    a practical about oxidising alcohols...
    Orgainc compound C turns bromine water colourless...
    What organic compound turns bromine water colourless??

    thnx for ur help
    I thought it was alkenes...the Bromine could be added across the double bond to give a dibromo molecule...
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    alkenes turn bromine water colourless eg. but-2-ene
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    (Original post by nicatre)
    I thought it was alkenes...the Bromine could be added across the double bond to give a dibromo molecule...

    (Original post by niharika.jha)
    alkenes turn bromine water colourless eg. but-2-ene
    thnx for ur help guys
    i was just a lil confused...alkenes..alkanes
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    (Original post by Princess Kawaii)
    thnx for ur help guys
    i was just a lil confused...alkenes..alkanes
    alkanes - only single bonds
    alkenes - double bond(s)
    alkynes - triple bond(s)
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    (Original post by Princess Kawaii)
    hi, just a quick question
    a practical about oxidising alcohols...
    Orgainc compound C turns bromine water colourless...
    What organic compound turns bromine water colourless??

    thnx for ur help
    just a note on what others have said, essentially unsaturated C-C bonds can have Br added across it. So alkenes and alkynes would both decolourise bromine water.

    Easy way to check amount of unsaturation, calculate double bond equivalents => it tells you overall amount of unsaturation in your molecule => then you can make educated guess as to whether it is alkene or alkyne

    To be sure, you can do IR to distinguish them. alkynes have distinctive peak at 2100 cm-1 which is not seen if your organic compound is alkene.
 
 
 
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