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    (Original post by Anam)
    What was everyones equation for the fragmentation question? I put 35 next to the cl in the fragment ion and 37 next to the cl radical is that right?
    no next to the carbon it come from
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    (Original post by emma_1111)
    Could you use gas liquid chromatography to separate the alcohol?
    I put column
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    (Original post by FireBLue97)
    Hydrogen bonding between O and N????????? NH OH etc.
    Yup.

    (Original post by Anam)
    What was everyones equation for the fragmentation question? I put 35 next to the cl in the fragment ion and 37 next to the cl radical is that right?
    You need to know that from [RCOR']+* the most stable fragment is [RCO]+

    This can then be applied to the question with acid (acyl) chlorides because they contain C=O

    So I did [ClCH2COCl]+* -> [COCl]+ (this added to 65, can't remember is 35/37 Cl) + [ClCH2]*

    Where * is a radical
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    (Original post by DexterMabel)
    I remember getting all 3 of these
    same
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    (Original post by DexterMabel)
    I remember getting all 3 of these
    Nucleophilic substitution CL replaced by NHR . 1 mark
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    (Original post by Hclarke9)
    Hahahahaha xD I'd laugh if we both get exactly the same amount of marks on that paper as well
    I'll follow you so I can keep in touch!
    Your name isn't Harry is it?
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    The polyester polymer was stronger due to permanent dipole-dipole being a stronger IMF between chains than the polypropene's VDW forces - which is why it is better for stitches.
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    Has anyone got an unofficial mark scheme?!
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    Was getting As in past papers, now feel like i've come out with an E
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    (Original post by FireBLue97)
    112 molecular ion
    Cocl 37 +16 ~+12= 65 as asked
    Yup and yup.
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    (Original post by Stevesteve12)
    Could the last question be CH3-O-CH2-C(CH3)2-CH2OH???
    o-ch2 was a triplet :/
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    so random that we had to indicate which isomer we were using of Cl. I just wrote it at the top like a mass number but so many questions like that had weird formats and threw me off because i wasn't used to it
    the hydrogen bonding really threw me as well for some reason

    what did people put for the chloroethanoic acid being a stronger acid? i wrote something about electronegativity at the last minute
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    (Original post by Seclusion)
    2.38 and 2.32 for two of them, forgot which way around tho.
    I think the dilute one was the lower pH and then the one with NaOH was higher, unless I'm remembering the question completely wrong now.
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    (Original post by Rabadon)
    o-ch2 was a triplet :/
    Oh thanks anyway
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    cl negative weakens oh bond
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    (Original post by idk97)
    am i the only one that got 8 for the carbon nmr ?
    i got 8 too
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    What do you think for an A?

    Posted from TSR Mobile
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    (Original post by RME11)
    The polyester polymer was stronger due to permanent dipole-dipole being a stronger IMF between chains than the polypropene's VDW forces - which is why it is better for stitches.
    Interesting. It asked for why the PCG or whatever it was was better though. I put that the PCG thing had polar ester bonds, so was susceptible to attack by nucleophiles such as water, naturally occurring in the body, and this means the stitches will break down as the wound heals, so patients don't have to go back to the doctors to get stitches removed
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    low ph was +NH3 not COOH or the other COOH trick question funny lol aqa
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    Did anyone else get this for the structure in qu. 9?Name:  Qu.9.jpg
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