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OCR Chemistry F322~ 4th June 2013~ AS Chemistry Watch

  • View Poll Results: How did you find the exam
    Hard A= 72
    42
    15.22%
    It was okay A= 76
    99
    35.87%
    Easy A= 79
    75
    27.17%
    Very Easy A=82
    60
    21.74%

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    (Original post by JimmyA*)
    I agree thats the structural formula for but-2-ene.
    Yes, it says you are meant to do it with but-1-ene?


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    (Original post by Jimmy20002012)
    But thats not but-1-ene reacting though?


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    what was the question? what paper?
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    (Original post by needtosucceed=))
    what was the question? what paper?
    Name:  ImageUploadedByStudent Room1370276020.416677.jpg
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    See post


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    Predictions?
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    (Original post by yodawg321)
    I always thought Specimen papers were harder well I did for Unit 1 haven't done Unit 2 yet
    same thats what I thought, they made it relatively easy though.
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    Is anyone else freaking out about this exam? It's worth so much UMS :/

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    Has anyone done Jan 2010 6 (e) ? I think esters will be the death of me..
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    (Original post by Jimmy20002012)
    Name:  ImageUploadedByStudent Room1370276020.416677.jpg
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    thats the specimen paper right? I remember seeing that mistake too, just ignore it
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    (Original post by Chemistry95)
    yep i agree, but the past papers are not super hard, the hardest one was probably the jan 2013 one
    really, I thought its been one of the easiest lol
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    (Original post by reubenkinara)
    He's OCR, I'm AQA. Pretty straightforward.
    For the record...I'm a girl
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    (Original post by Dr. Django)
    Your advice wasn't even directed at me but you just helped me demystify enthalpy calculations as I realised I'd always assumed it was going the 'normal' way! Awesome, thanks
    Haha - pleased to help All thanks to the CGP book !
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    (Original post by g.k.galloway)
    For the record...I'm a girl
    I was thinking the same lol, maybe a typo
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    (Original post by Jonma)
    Has anyone done Jan 2010 6 (e) ? I think esters will be the death of me..
    It's a diol, so there's two carboxylic acid groups and one alcohol group to make it, if that helps
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    Anyone feel like revising?
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    (Original post by simifeltham)
    Anyone feel like revising?
    Define a homologous series

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    (Original post by needtosucceed=))
    what papers that from?
    specimen paper
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    fun enthalpy q

    A and B are isomers of C3H6.
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    I'm doing this as a resit, and im just saying if anybody does do badly once you do A2 then you come back to this it's so much easier so if you do bad this year just resit it next june and you'll most likely do so much better
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    has anyone got any tips for not making STUPID mistakes? This is the reason for me getting low As in all my past papers! any help would be much appreciated thankyou
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    (Original post by JimmyA*)
    For empirical formula you divide the percentage composition by the atomic mass. So 88.89/12=7.4075
    11.1/1=11.1
    7.4075 is the smallest number so 7.4075/7.4075=1
    11.1/7.4075=1.5
    C = 1:1.5 so C2H3
    That doesnt make sense? surely the empirical formula is CH2 then?
 
 
 
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