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OCR AS - Chemistry Unit F322 - Chains, energy and resource - REVISION! watch

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    (Original post by touran22)
    yeha next friday...over a week to go...im pretty confident. make sure you guys do the old chains and rings papers...same thing just two papers!
    I thought it was on friday but warthog mentioned thursday (I think?) earlier and I got a bit confused.
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    (Original post by kingam)
    should be C 2H2 -CH4 balnaced then just do reactants take products i never do hess cycle waste of time i think in mark scheme you can get full marks by writing just answer
    reactants - products is for combustion, this is formation from the looks of it so its:

    Sum of products - Sum of Reactants

    i don't do the hesses cycle either...i hope your right about just the answer being right!
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    (Original post by Killjoy-)
    I thought it was on friday but warthog mentioned thursday (I think?) earlier and I got a bit confused.
    its definitly Friday 27th at 1PM!!
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    (Original post by touran22)
    its definitly Friday 27th at 1PM!!
    Good! I want an extra day, even if it is just one day.
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    isnt formation products - reactents ?
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    (Original post by kimmey)
    isnt formation products - reactents ?
    yeah it is..

    KillJoy what exam do you have before it?
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    (Original post by kimmey)
    isnt formation products - reactents ?
    Yes, if you are given formation then its

    sum of enthalpy changes of formation for products - sum ... for reactants
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    (Original post by touran22)

    KillJoy what exam do you have before it?
    I don't have any apart form chemistry on friday, but this friday I have Maths C2. I have Biology Unit 2 and stats on the thursday before the chemistry exam.
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    (Original post by Killjoy-)
    I don't have any apart form chemistry on friday, but this friday I have Maths C2. I have Biology Unit 2 and stats on the thursday before the chemistry exam.
    ohh ok...i got bio unit 2 aswell....that exam seems hard though!
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    (Original post by touran22)
    ohh ok...i got bio unit 2 aswell....that exam seems hard though!
    The Bio unit 2? I think it might be. I got Bs in the mocks in class for unit 1 and then managed an A in the exam, I was quite surprised.
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    (Original post by warthogBE)
    Check your equation - it's not balanced. There should be 2 moles of H2, so you use double the value of H2 that you're given to compensate for this. Give it another go, see if that sorts it
    oops forgot to write that bit. but when i calculated it i had that in. im getting the correct value (74.8), just not the correct sign?!
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    COuldn't find 2008-9 F322..would be so helpful is someone give me a link
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    (Original post by arvin_infinity)
    COuldn't find 2008-9 F322..would be so helpful is someone give me a link
    this thread 1st post

    http://www.thestudentroom.co.uk/show....php?t=1518064
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    why isnt there a jan 09 f322 paper put there is a jan 09 f321 paper ????
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    (Original post by kimmey)
    why isnt there a jan 09 f322 paper put there is a jan 09 f321 paper ????
    The Jan F322 paper is not on the OCR website either, I assume this is because the new course started that year.
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    it must hv done though because theres an f321 paper in jan 09
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    (Original post by kimmey)
    it must hv done though because theres an f321 paper in jan 09
    But isn't f322 meant to be taken in june? So if the course started in 2009 then there wouldn't be a f322 paper for january, only for june. Later on I guess they would have january f322 papers for retakes.
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    (Original post by kingam)
    are you going to do f321 in june i am lol if you are how you revising for it
    yeah Im doing it on Monday but haven't actually started revising for it yet.

    I have my maths C2 exam tommorow so have been revising like mad for that. will start my chemistry on the weekend. think i will have to just do all the past papers.

    How have u been revising?
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    ah, i had C2 yesterday, was pretty difficult i thought. got my F322 on thursday 27th and resitting F321. so got some serious revising to do :3

    guy on YouTube, khanacademy, real useful fr revision, explains things pretty well
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    (Original post by Killjoy-)
    I thought it was on friday but warthog mentioned thursday (I think?) earlier and I got a bit confused.
    Yeah - my mistake - I was getting it mixed up with my Biology, which is on the Thursday, sorry! :doh:
 
 
 
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