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    I couldn't find a thread for this exam, is anybody retaking this AS module?



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    (Original post by annabelflynn)
    Yep me! How you feeling about it?
    And if you have the June 2015 paper, please post it!
    Ahh idk I think okay, I haven't done the 2014 or 2015 paper again so I'm not sure yet, hopefully we find it a lot easier after doing A2s! How about you??


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    How did it go guys
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    (Original post by WhatALad)
    How did it go guys
    It was a pretty okay paper tbh

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    Wasn't too bad for the enthalpy change of formation question, were the values in the table combustion or formation? I can't remember!
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    (Original post by HannaaJackson)
    Wasn't too bad for the enthalpy change of formation question, were the values in the table combustion or formation? I can't remember!
    The values were for combustion but I used them for formation
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    What did people get for 2 isomers from carbon hydrogen and bromine? Below 150mr
    Was it CH3CHBrCH3 and CH3CH2CH2Br ?
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    Lets just hope the grade boundaries arent too high, I need an A in this paper or else im doomed :/
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    (Original post by Twomenoneclub)
    What did people get for 2 isomers from carbon hydrogen and bromine? Below 150mr
    Was it CH3CHBrCH3 and CH3CH2CH2Br ?
    Thats what i got^
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    Did anyone else get methylpropanoic acid for the last one?
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    (Original post by mattyk5)
    Thats what i got^
    3 carbons? Someone said 4 carbons,but I thought it was 3 carbons
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    did anyone get something like 347.2kJ, 281, 1482 for energy?I messed up the percentage yield somehow, got 11.1gand for the EU questions i just couldn't work it out I think i got 740l or something ridiculousalso C3H7Br for analysis? And then CH3CH2CH2OH, NaBr, and CH3CH2CH2ONa?otherwise it was a decent paper but i don't think it's much easier than any of the past papers
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    (Original post by Riadiram)
    Did anyone else get methylpropanoic acid for the last one?
    For the very last one? I got 1,1-dimethylpropanoate
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    (Original post by Riadiram)
    Did anyone else get methylpropanoic acid for the last one?
    Nope i think i got 2-methylethylpropanoate <<< if thats the correct name for it

    CH3CHCOOCHCH3CH3^
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    i think the paper was pretty good except now i realised that with the CO2 question; i added a factor of 10 to the 5.6x10^5.. its spposed to be 560,000 but i wrote 5600,000 ;((((( sed lyf
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    (Original post by Riadiram)
    Did anyone else get methylpropanoic acid for the last one?
    I got Propyl-Propanoate (not the correct name for it) with propanoic acid forming a ester bond with propan-2-ol
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    (Original post by Twomenoneclub)
    3 carbons? Someone said 4 carbons,but I thought it was 3 carbons
    yeah 3 carbons. Couldnt have been 4 carbons because the empirical formula can have 2/3 carbons. If lets say the empirical had 2 then the only way to get 4 carbons was to double the empirical formula which leads to the Mr being OVER 150 which it couldnt be so therefore had to be 3 carbons imo
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    (Original post by milutin767)
    did anyone get something like 347.2kJ, 281, 1482 for energy?I messed up the percentage yield somehow, got 11.1gand for the EU questions i just couldn't work it out I think i got 740l or something ridiculousalso C3H7Br for analysis? And then CH3CH2CH2OH, NaBr, and CH3CH2CH2ONa?otherwise it was a decent paper but i don't think it's much easier than any of the past papers
    CH3CH2CH2ONa? That doesn't sound right, are you talking about the last question? I got the two haloalkanes as CH3CH2CH2Br and CH3CHBrCH3
    Then propan-1-ol and propan-2-ol after reflux with OH-...
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    (Original post by nimbusninja)
    For the very last one? I got 1,1-dimethylpropanoate
    +1
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    I got like 239 litres or something along them lines for the CO2 question
 
 
 
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