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OCR Chemistry F324(RINGS..)June 2010 past paper?Help!!!!!!! watch

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    (Original post by thecdon)
    I lent the MS to a friend so can't post answers.
    Damn :/ no worries
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    Anybody know how to get full marks (or even just the general idea) for question 4 c?

    Got an A in the mock paper but still managed to only get 2/7 on that question - any help would be appreciated.

    EDIT: Also 5 b ii) if anybody knows, cheers
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    (Original post by Rogercbinboy)
    Anybody know how to get full marks (or even just the general idea) for question 4 c?

    Got an A in the mock paper but still managed to only get 2/7 on that question - any help would be appreciated.

    EDIT: Also 5 b ii) if anybody knows, cheers
    for 4c

    You need phenyethanal + 2[h] =n phenylethanol
    You need to draw it out and put the reagent under the arrow = NaBh4 + heat

    Then you need to draw out phenylethanal = phenylethanoic
    you also need to put the potassium dicromate and reflux under the arrow


    Then you need to draw the phenylethanol + phenylethanoic in a esterification reaction to make your ester. Dont forget the reagent

    You get marks for the reagents and the products you make i think
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    (Original post by Ayostunner)
    for 4c

    You need phenyethanal + 2[h] =n phenylethanol
    You need to draw it out and put the reagent under the arrow = NaBh4 + heat

    Then you need to draw out phenylethanal = phenylethanoic
    you also need to put the potassium dicromate and reflux under the arrow


    Then you need to draw the phenylethanol + phenylethanoic in a esterification reaction to make your ester. Dont forget the reagent

    You get marks for the reagents and the products you make i think
    Cheers for the fast and clear response, only realised now that I've reread it that it says the phenylethanal is the only organic compound - I just added phenylethanol without explaining how to make it.

    Gotta read questions more carefully it seems.
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    (Original post by Rogercbinboy)
    Cheers for the fast and clear response, only realised now that I've reread it that it says the phenylethanal is the only organic compound - I just added phenylethanol without explaining how to make it.

    Gotta read questions more carefully it seems.
    Lol no probs, Silly mistake everyone makes.. Dont worry !
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    (Original post by jlcf)
    Here is the full paper:


    http://www.megaupload.com/?d=0PMY961Q
    Hi thanks so much for the paper, much appreciated

    Just wondering if you have the mark scheme? and if you could upload it please.
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    (Original post by thecdon)
    I lent the MS to a friend so can't post answers.
    When you get it back, can you post it please.
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    (Original post by thecdon)
    I've got the paper and mark scheme but only hard copy, don't know how to work the scanner!
    can u tell me the answer to 3di) which ketone was on the spectrum??? thanx
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    (Original post by VKS)
    can u tell me the answer to 3di) which ketone was on the spectrum??? thanx
    I don't have the Mark Scheme, so no, sorry.
    Can people please stop asking me for the answers to this paper as I do not have them! Thanks.
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    (Original post by thecdon)
    I don't have the Mark Scheme, so no, sorry.
    Can people please stop asking me for the answers to this paper as I do not have them! Thanks.
    hey have you got the answers to this paper? lool
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    (Original post by Ayostunner)
    Ok guys i've tried to scan the papaer , i've already written on it so i tried to use paint to rub it off sorta and this is my 1st time using my scanner so forgive my rubbishness and the rubbishness of my uploading
    wickeedddddddddddddd
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    (Original post by Ayostunner)
    Attachment 93794

    Attachment 93795

    Attachment 93796

    Attachment 93797

    Attachment 93798

    More rubbishness..sorry for the messed up order
    stop criticising yourself lol! thanks a lot for the paper & lol @ NAME; ayo!
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    argh im gone blankk can anyone offer any suggestions on 3 c) plzzzzzzzzzz^100000
    thanks
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    i got 2-methyl-propanal for structure (it's been given a tick :s)
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    mark scheme for june f324 please?
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    pleasssseeee f324 2010 mark scheme!
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    PLEASE can someone upload the june 2010 f234 mark scheme plzzzzzzzzzzzzzzzz
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    Can someone please help me with 3a i am stuck plzzzzz
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    (Original post by a.partridge)
    i got 2-methyl-propanal for structure (it's been given a tick :s)
    BUT 2-methyl-propanal has 4 carbon atoms and the aldehyde in the question has
    C5H10O NOT C4?????
    PLease explain this
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    (Original post by VKS)
    can u tell me the answer to 3di) which ketone was on the spectrum??? thanx
    I am 100% sure but i think its ketone 1 because the spectrum has 4 different carbon enviroments and so does ketone 1. Ketone 2 has 3 carbon enviroments and ketone 3 (well the one i have drawn it has 3 as well ) so i think its ketone 1.
    If anybody thinks i am wrong please correct me as its just a guess
 
 
 
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