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AQA AS Chemistry 7404/1 and 7404/2 - 27th May 2016 and 10th June 2016 watch

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    (Original post by SANTR)
    What did you write for the question on why CO2 etc absorb infra red radiation?
    I wrote that it has a high bond enthalpy so it absorbs it instead of breaking the bond, but I have no bloody clue really.
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    (Original post by SANTR)
    What did people write for the anti bumping granules Q?
    I put how it will help to prevent vigorous reaction to happen
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    I thought that was a chill paper, made one stupid mistake when forgetting to put h20 as another product in the oxidation thing and there were a few dodgy 1 markers but overall way better than the first
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    when you think you got the unit for kc down but u miss out a ^-1. :/

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    Hey, I'm making the unofficial mark scheme right now. If you guys can reply to this post with any answers that would be great!
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    (Original post by isabella1999)
    I thought that was a chill paper, made one stupid mistake when forgetting to put h20 as another product in the oxidation thing and there were a few dodgy 1 markers but overall way better than the first
    Same mistake haha
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    Absorbs every for decomposition also has high vibration frequency therefore absorbs it's natural frequency for vibrating. It's with vibration and frequency, but I wrote both 😂
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    (Original post by GabbytheGreek_48)
    when you think you got the unit for kc down but u miss out a ^-1. :/

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    It's 10.5 right?
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    What was the answer to the last MPC? I didn't see it and had to guess
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    (Original post by haes)
    What was the answer to the last MPC? I didn't see it and had to guess
    I got D


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    (Original post by DaVinciGirl)
    Hey, I'm making the unofficial mark scheme right now. If you guys can reply to this post with any answers that would be great!
    Good luck. I can't really remember much about it until I am asked about certain questions. Feel free to ask what I got for a question and I'll see if I can help
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    (Original post by Christina1999H)
    I got D


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    Yeah same, it was C or D, though I'm pretty sure I put D
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    yeah I got that but I ment the unit for the first part of the question

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    can someone draw out the displayed formula of the carboxylic acid formed under reflux?
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    (Original post by GabbytheGreek_48)
    yeah I got that but I ment the unit for the first part of the question

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    The Kc answer was 10.5?
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    hmm I think unit for kc was mol^-1 dm^3 then kc I got 10.5 um I forfet the second question but if you remind of the questions ull probably remember my answers

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    (Original post by DaVinciGirl)
    Hey, I'm making the unofficial mark scheme right now. If you guys can reply to this post with any answers that would be great!
    I got the enthalpy of combustion(?) as 308 kJmol^-1
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    Name:  download.png
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    Anyone get it like this.
    Propan-1-2-diol under reflux.
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    (Original post by GabbytheGreek_48)
    hmm I think unit for kc was mol^-1 dm^3 then kc I got 10.5 um I forfet the second question but if you remind of the questions ull probably remember my answers

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    For the Kc question, did you just divide the moles by the volume (2.00) or also multiply by 1000?
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    (Original post by raiba)
    I got the enthalpy of combustion(?) as 308 kJmol^-1
    Is that the one the Multiple choice question?
 
 
 
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