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    (Original post by FoOtYdUdE)
    Any suitable Base. I wrote NaOH, lol. *summat to do with scrubbers* [neutralising]
    I put neutralising but wasnt sure !!!
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    Crap, seems like I've got the spectroscopy question wrong then.... :facepalm:

    This paper felt easier than the one last year though, despite only doing 1 day of revision for it. What did you guys put for "how is ozone maintained in the atmosphere?", did you have to quote the exact wavelengths of light which cause it to be created and destroyed?
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    (Original post by Presidential)
    1) fractional distaillation, separation by boiling points becauses different chain lengths have differen boiling points,

    err to be exothemic the enthalpy change that occurs when breaking bonds must be less than the enthalpy change when the bonds of products are made.

    anther.... can be reused, 100% atom economy, sustainable, no poisnous gases etc
    Damn, I knew I was reading the question slightly wrong. I said for the first question that the Kerosene is seperated due to its hydricarbon length (via a range) in a fractional column.

    And for the enthalpy I said that the enthalpy change is exothermic; (heat) energy is absorbed to break the bonds abd energy is released to make the bonds.
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    What do people think about the grade boundaries? In june it was 75/100 (Raw) for an A.

    Higher or Lower?
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    (Original post by FoOtYdUdE)
    I'm almost certain it was a carboxylic acid and not a ketone. Guys did u not see the C-0 peak??????? @ ~ 1200 cm ^-1 or was i hallucinating?>? i'm certain it was propanoic acid.
    I got propan-1-ol and propanoic acid too
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    Overall thought the paper wasnt 2 bad would really appreciate 85% + will see (but hav a bad feelin its not cuz of little mistakes)


    dreadin f324 errrggghhhh
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    the question that asked to draw out C6 H10 O6..how did you do this?..anyone?
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    (Original post by major-major-major)
    What do people think about the grade boundaries? In june it was 75/100 (Raw) for an A.

    Higher or Lower?
    higher 80 maybe if people did well, or it may just stay the same
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    (Original post by hupper12345)
    the question that asked to draw out C6 H10 O6..how did you do this?..anyone?
    It was a di-ester.
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    (Original post by hupper12345)
    the question that asked to draw out C6 H10 O6..how did you do this?..anyone?
    I cant remember that, was dat in f322?
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    im super confused..
    is bond making endothermic or exothermic?
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    (Original post by nameless_one)
    im super confused..
    is bond making endothermic or exothermic?
    Exothermic.
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    (Original post by Good Apollo)
    It was a di-ester.
    wasnt it C6H10O4
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    (Original post by nameless_one)
    im super confused..
    is bond making endothermic or exothermic?
    endothermic= bond breaking
    exo= bond making

    hmm i think..
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    (Original post by nameless_one)
    nah it was deffo two
    it say describe bla bla bla... include an equation in your answer
    No. I was pretty sure it was just 1 mark, as i remember being surprised.
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    (Original post by Presidential)
    wasnt it C6H10O4
    ohh really...might of been...i hated that Question.....this paper was quite hard.
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    (Original post by Presidential)
    wasnt it C6H10O4
    Yeah, I'm assuming hupper12345 was talking about that though.
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    (Original post by thecdon)
    No. I was pretty sure it was just 1 mark, as i remember being surprised.
    If your talking bout f322 it was 2 marks
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    (Original post by Presidential)
    there was no OH peak so it was not a carboxylic. Also there was a fragmentation a 45 which is ch3ch(oh)
    Actually, COOH+ ALSo = 45! :confused: Aaaah, i'm certain i saw a C-0. i have a data sheet in front of me cuz i'm revising for unit 4. i'm 110% sure it's propanoic acid! aww, i'm being so stubborn. sorry guys. don't hate me! :o:
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    (Original post by hupper12345)
    endothermic= bond breaking
    exo= bond making

    hmm i think..
    yup
 
 
 
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