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    (Original post by Alotties)
    Not too bad!
    I ran out of time so I didn't get to check my answers.
    There were a few that were a bit strange but I just tried my best and put educated guesses when my brain failed
    How did you find it?
    I think it was much better than january but I didn't like the weird random questions like the trans fats and the TMS...found them hard to word
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    (Original post by Brad0440)
    Like this?
    My benzene ring was attached to the C with the two methyl groups instead of the C with the double bond :O Will I get marks for it?
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    (Original post by Taimmi)
    ...did anyone else notice the mistake?
    We had a notice read out for it. The typo 'identity' instead if 'identify' right?
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    (Original post by ihatepeople37)
    at least 5

    (Original post by Gulzar)
    Quite a lot I'm afraid because the structure itself will be worth at least half of the available marks.
    Really? At most i would lose 3 marks i think because only 3 marks are given for identifying the structure if you look at previous past papers. And i may gain some marks out of those 3 because i got the methyl groups and the benzene ring.
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    (Original post by Myocardium)
    Yesss!!! Was a benzene ring attached to a C; the C was attached to an O and C=O on one side and the other two sides had a methyl group each. So surprised I managed to get it seeing as I have NEVER managed to construct a molecule from NMR before.
    The C=O was attached to a C with 1H and 2 Methyl groups I think :/
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    (Original post by ihatepeople37)
    Oh ****.... was it not phenol instead of benzene?
    I don't think so, because then there would have been 3 oxygens and the molecular formula was C10H12O2
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    I think there was a lot in this exam to trick people out actually, i didn't think it was that easy
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    (Original post by Myocardium)
    We had a notice read out for it. The typo 'identity' instead if 'identify' right?
    Yeah, we had that too. But we think there was another one in the percentage yield question.
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    What did anyone get for the percentage yield question?
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    I got CH((CH3)2)C6H4COOH for the last one. Anyone else get this? The carbon 13 spectra did not show a C-O so it couldn't of been an ester, no?. Also 4x Aromatic environments. Agh. Think i messed it up lol
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    (Original post by Myocardium)
    My benzene ring was attached to the C with the two methyl groups instead of the C with the double bond :O Will I get marks for it?
    I think ur right That's what I got too because of the splitting it has to be like that
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    Did anyone get something like this for one of the questions? (I think it was something to do with an ester forming and then a small, inorganic compound (i.e. water))
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    (Original post by SLAYERRR)
    What did anyone get for the percentage yield question?
    63.5% You?
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    (Original post by andywilliamsRPGT)
    I got CH(CH3)C6H4COOH for the last one. Anyone else get this? The carbon 13 spectra did not show a C-O so it couldn't of been an ester, no?. Also 4x Aromatic environments. Agh. Think i messed it up lol
    One of the peaks linked to -COO
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    (Original post by Myocardium)
    63.5% You?
    That's what I got
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    (Original post by Brad0440)
    I don't think so, because then there would have been 3 oxygens and the molecular formula was C10H12O2
    no i think the alcohol making up the ester was phenol. the ester group is the opposite way round to what everyone is saying. O was attached to the C on benzene
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    (Original post by dadams2)
    no i think the alcohol making up the ester was phenol. the ester group is the opposite way round to what everyone is saying. O was attached to the C on benzene
    I agree It was C6H5OOCH(CH3)2
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    (Original post by Bazuka)
    One of the peaks linked to -COO
    I thought that peak was a C6H5C(H) peak.
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    I initially thought there was a mistake on percentage yield as I thought the Mr given for compound e was wrong, talking to a friend after I realised I treated the bond coming out of the paper as an h when it was ch3, meaning the Mr of 160 was correct. I got 61.9 percent or something but I don't think that's right
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    (Original post by Myocardium)
    The invigilator didn't have any but luckily a couple of students forgot their rulers and one student had a spare ruler so was fine. Dod you get 0.58 for the Rf value?
    Yeahhh what did you think about the paper?
 
 
 
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