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    Hey guys Ive made a post and poll. feel free to contribute to it. http://www.thestudentroom.co.uk/show....php?t=4164897
    Also please discuss your answers there so I can compile an unofficial markscheme
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    (Original post by AliRock)
    Bingo.
    how many marks will i get if i got the observations correct but reagent wrong? D:
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    (Original post by girl :D)
    what did u guys put for the oder of E and F
    1 then 2 i think
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    (Original post by tsred)
    what's the hydrogen percentage and the peak for that question
    9.4 for hydrogen
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    (Original post by thehollowcrown)
    i said chromatography too mate, couldn't think of anything else apart from filtration and i didn't think that was right
    fractional distillation alcohol not amino acid
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    (Original post by the1pedro)
    I put same as you 😊
    I put simple Tollens' reagent for this one.... Is it not possible
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    (Original post by Ejsjwwj)
    For step three would it be right if you put nabh4 instead of lial4
    No, sorry.

    (Original post by girl :D)
    what did u guys put for the oder of E and F
    D: zero
    E: second

    People are in agreeance with E, but D people are getting 1/0 so I don't know.
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    (Original post by janvi24)
    I wrote tollens 😭😭
    I put tollens too, P was an ketone (right??!) but I wasn't sure about Q.
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    (Original post by thomaarrss)
    9.4 for hydrogen
    10.1%
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    What was the mehcanism for the acetate? Nucleophilic Addition?
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    (Original post by janvi24)
    I wrote tollens 😭😭
    I wrote kr2cr207 one was an aldehyde and one was a ketone I'm sure
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    The activity of this thread suddenly went from 0 to 100 like the concentration of propanone
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    (Original post by FireBLue97)
    fractional distillation alcohol not amino acid
    I know now, didn't come to me in the exam tho
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    (Original post by blueberry389)
    how many marks will i get if i got the observations correct but reagent wrong? D:
    I'd guess you'd lose just 1. Not sure though, obviously.
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    (Original post by girl :D)
    what did u guys put for the oder of E and F
    1 and 2
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    I got 0 and 2 as well
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    (Original post by thehollowcrown)
    1 then 2 i think
    I spent so long trying to figure it out and then near the end i was **** it an just put 0 and 2
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    (Original post by BeckaH2)
    I put tollens too, P was an ketone (right??!) but I wasn't sure about Q.
    P was a ketone, so it has no visible change.

    Q would also have no visible change with Tollens' so it cannot distinguish them.
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    (Original post by thomaarrss)
    how the **** are we supposed to know what a medical suture is?!! now i know its a stitch that can dissolve so i could answer the question but i didn't know that in the exam did i
    Yes Thomas!! Totally agree, why should my lack of medical knowledge disadvantage me in a CHEMISTRY exam
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    (Original post by SirRaza97)
    What was the mechanism for the acetate? Nucleophilic addition?
    Can you help me make an un official mark scheme?
 
 
 
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