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Equilibria, Energetics and Elements (F325) - June 2011 Exam. watch

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    (Original post by J DOT A)
    Your telling me that 176-285=461?
    There are two negatives if you look a little closer, making it positive.

    176--285
    is the same as
    176+285

    which is 461
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    (Original post by pan_93)
    I ****ED this exam up so bad...not only was it so ****ing hard but the ones u i should have got right i made pathetic errors on...

    I got C10 H8 N2
    I got the same...
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    (Original post by Lissa-154)
    Yeah I got a massive negative value for this. Did the whole hydration = lattice enthalpy + solution.
    like -3000 or something? ok good.. thats 2 marks. YIPPEEE!
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    what did everyone write on the lines for the born haber cycle?

    How did you calculate the enthalpy?
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    (Original post by Heatheroink123)
    Did anyone get uses for H2 as hydrogen fuel cell vehicles and margarine production? Or does anyone know if they're right?
    I put those - well, I put H2 as a fuel and also for hydrogenation, but same thing as margarine, I hope :/
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    how did you rearange delta g=delta h-Tdelta s
    i rearaged it to.
    delta g divided by t then add delata h

    got a massive answer tho
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    (Original post by susan23)
    i put enthalp was negative because temperature was 0 making S xT = 0 so the only way G could be less than 1 for feasability was if delta-H was negative?!??!

    OMG nooooo thats probably the only thing i thought I got right!?!!?!?

    That is exactly what I did...

    But I think there are other combinations you can have providing you can explain them..
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    TBH the thing makes this exam hard is that theere were too much wordy questions and little marks for long caculations. However the difficulty of the paper overall is the same as in jan I believe
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    That was awful !!!
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    (Original post by Lissa-154)
    Yeah I got a massive negative value for this. Did the whole hydration = lattice enthalpy + solution.
    Yeh i got a massive negative value as well. Hopefully that will be one more mark.
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    (Original post by Heatheroink123)
    Did anyone get uses for H2 as hydrogen fuel cell vehicles and margarine production? Or does anyone know if they're right?
    I said fuel cells and the haber process but that sounds right!
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    What did everyone get for the percentage of copper at the end?? :| I feel so crap !
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    (Original post by bigAsh)
    I put those - well, I put H2 as a fuel and also for hydrogenation, but same thing as margarine, I hope :/
    i put as fuel and in harbour process
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    (Original post by msAW)
    same, my med offer is gone but i can't even think about it because theres nothing i want to do more. this paper was incredible.
    Mine is also gone. As is my Biomed insurance.
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    (Original post by pan_93)
    I ****ED this exam up so bad...not only was it so ****ing hard but the ones u i should have got right i made pathetic errors on...

    I got C10 H8 N2
    ^ so did I
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    (Original post by Heatheroink123)
    There are two negatives if you look a little closer, making it positive.

    176--285
    is the same as
    176+285

    which is 461
    The reaction was feasible. I got like -100 something.
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    (Original post by *QueenBeee)
    anyone amazing and beautiful offering to do unofficial mark shceme??
    major rep for life!
    If someone posts the questions I will happily post my answers to them
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    (Original post by pan_93)
    I ****ED this exam up so bad...not only was it so ****ing hard but the ones u i should have got right i made pathetic errors on...

    I got C10 H8 N2
    That is correct.
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    Ocr you have ruined my chance of going to medical school, therefore f***ed up my career.
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    someone came out of the exam saying...."aaaah I feel so good..."

    WHAT THE **** ARE YOU ON.
 
 
 
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