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AQA A-level Chemistry paper 2 7405/2 Unofficial Markscheme Watch

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    (Original post by muhammad7867)
    i swear it asked you to make 1,3 di nitro benzene from nitrobenzene ?
    It did
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    (Original post by RoadToGradeA)
    Yes, that i what i wrote as in high ph, i swear there is loads of oh ions, so serine will act acidic
    i wrote COO- aswell
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    (Original post by muhammad7867)
    i swear it asked you to make 1,3 di nitro benzene from nitrobenzene ?
    Yes thats what i was saying to the fellow student room user you stared from 1- nitrobenzene and you needed to get to 1,3-dinitorbenzene using electrophilic substiution mechanism
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    (Original post by muhammad7867)
    i wrote COO- aswell
    Correct. Agreed
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    (Original post by Hassankhan2405)
    Did anyone get 870Mg for one of the questions? The Ideal Gas Equation?
    I got that too!
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    (Original post by p____)
    Same omg how many marks was that question? im so annoyed i made such a silly mistake
    Idk I think it was 4 marks ? Cos it was an easy mechanism wouldn't be any higher than that but I misread most questions so gonna have to ace paper 3
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    Realising I've done a lot worse on that paper than I thought😣
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    What did people get for the new concentration of A in the rate equation question? I got 0.205...
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    (Original post by GangRelated)
    For the question about Ea.
    Did you guy use
    lnA as 16.9 or ln16.9.
    Ln16.9 because youre taking the log (ln) of A
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    (Original post by Jessie1999)
    What did people get for the new concentration of A in the rate equation question? I got 0.205...
    0.65 it's basically (0.5 x (root1.7))
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    (Original post by Hassankhan2405)
    0.65 it's basically (0.5 x (root1.7))
    Oh dear, well I have got that wrong oh well it is only 2 marks
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    (Original post by Ashy99)
    I'm so baffled how are people saying that paper was easy...
    I found it so hard
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    (Original post by mt12345)
    I found it so hard
    Saaame! I got out of the exam and my whole class were saying 'it was the nicest paper' they've ever sat and i think I've absolutely flopped lol.


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    (Original post by NiceB8M8)
    How many marks would I get for getting 15.8 for Ea instead of 50.7 as I thought A was given not lnA. I'm assuming I get 2/4.

    Same! That was so annoying can't believe i missed that! 😭
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    (Original post by Hassankhan2405)
    Did anyone get 870Mg for one of the questions? The Ideal Gas Equation?
    yeah boii
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    (Original post by mt12345)
    I found it so hard
    Yo, me too, I'm not usually that bad at chemistry but I just thought they tried to trip us up in so any places
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    Does anyone remember what mechanisms came up?
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    Guys for the type of polymerisation, what did everyone put?
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    (Original post by mathusha)
    Guys for the type of polymerisation, what did everyone put?
    condensation i think
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    U mans allow the dwelling, I think the hardest part of these A-level exams is moving forward and revising for the next exam fresh-minded and that, i probably dont make sense still, this pressure has differently fu*ked me up, safe im gone
 
 
 
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