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    (Original post by M.Branson98)
    I completely agree, there were so many confusing and difficult questions and not to mention that NMR question at the end...
    Yeah, hopefully ours tomorrow won't be quite as bad.
    Exactly, the main problem was that over all of the other past papers there are so many recurring questions but last years paper had so many new things we don't learn about which is fine and all but they were only worth one or two marks but took way more than two minutes to think about ;(
    However seeing as it's the last year of this syllabus I think OCR are going to come up with something horrible
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    guys what would proton nmr peak for phenol look like, would it be a broad singlet like for -oh


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    Guys how would you draw the optical isomer if there's two chiral centres?

    E.g CH3CH(OH)CH(NH2)CH3

    Can anyone show me how the optical isomers would look?

    Oh never mind, I forgot 2 chiral centres results in 4 optical isomers
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    (Original post by AqsaMx)
    Guys how would you draw the optical isomer if there's two chiral centres?

    E.g CH3CH(OH)CH(NH2)CH3

    Can anyone show me how the optical isomers would look?
    For two chiral centres, there will be 4 isomers.

    (Original post by ranz)
    guys what would proton nmr peak for phenol look like, would it be a broad singlet like for -ohPosted from TSR Mobile
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    (Original post by bakedbeans247)
    Yeah but this is the last one, so anything that hasn't come up yet, that hasn't been asked about yet, will probs come up, though unlike biology ocr, i think everything has been asked!

    Btw whats the hardest f324 paper in your opinion?
    last years was the worst
    But i think june 2010 was pretty hard as
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    (Original post by alow)
    For two chiral centres, there will be 4 isomers.



    with 2 chiral centres would you then split up the structure?
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    (Original post by tcameron)
    last years was the worst
    But i think june 2010 was pretty hard as
    Ah ok, ill check it out to see if i've done it! Yeah i'm resitting from that paper But i went through it today, it's not that bad you know!
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    (Original post by AqsaMx)
    Guys how would you draw the optical isomer if there's two chiral centres?

    E.g CH3CH(OH)CH(NH2)CH3

    Can anyone show me how the optical isomers would look?

    Oh never mind, I forgot 2 chiral centres results in 4 optical isomers
    is this two of the 4? https://gyazo.com/7827531e86b2535c247acc6342d4b92d
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    guys do you any other specification that does proton nmr and what paper is it?
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    (Original post by aydin124)
    guys do you any other specification that does proton nmr and what paper is it?
    aqa - all their papers
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    Does anyone have the chemistry 2015 papers that you could kindly link please?
    Thanks.
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    Name:  image.jpg
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Size:  278.5 KB

    Is this compound called methylbenzyl benzoate?
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    (Original post by bakedbeans247)
    Evidently it was super tough for me too! Back here again resitting...but i just went over it and it's seemed okay! And my favorite topics came up too. Not sure how i went wrong last yr...gl!
    Me too bro . You fasting? It's hard to study and fast lol I'd assume your Muslim from your pic lol.
    Either way this paper I think will be okay. Last year I got a U, redid the paper eariler and I got an A. Still though, exam pressure will make it so much harder to remember basic stuff!

    I think I'm gonna get at worst C at best A.
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    (Original post by AqsaMx)
    Guys how would you draw the optical isomer if there's two chiral centres?

    E.g CH3CH(OH)CH(NH2)CH3

    Can anyone show me how the optical isomers would look?

    Oh never mind, I forgot 2 chiral centres results in 4 optical isomers
    These 4?
    Attached Images
     
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    (Original post by AqsaMx)
    Name:  image.jpg
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    Is this compound called methylbenzyl benzoate?
    I'd say so.
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    When you have a salt of an amine e.g ethylammonium chloride, where do you put the positive charge? Is it on the N or what?
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    (Original post by M.Branson98)
    When you have a salt of an amine e.g ethylammonium chloride, where do you put the positive charge? Is it on the N or what?
    Should be the N as this is what's accepted the proton (H^+)
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    (Original post by AqsaMx)
    Name:  image.jpg
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    Is this compound called methylbenzyl benzoate?
    According to wikipedia, it would be called benzyl benzoate.
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    i guess what messed me up was realising what peak was due to HC-C-N Name:  ImageUploadedByStudent Room1465832224.243026.jpg
Views: 175
Size:  83.8 KB how did u guys know it was the singlet?


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    (Original post by bakedbeans247)
    any F324 predictions for tomorrow guys? teachers say anything?
    teacher said there is gonna be an nmr for amides or halogenoalkanes.
 
 
 
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