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AQA CHEM4 discussion/unofficial mark scheme Watch

  • View Poll Results: How hard did you find this paper?
    Easy, will get an A*
    31
    4.66%
    Moderate
    89
    13.38%
    Harder than any other paper
    405
    60.90%
    I flopped
    140
    21.05%

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    electrophile same structure as the fragment ion?
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    (Original post by M-AC3)
    Can you retake chem 4 next year??
    You can, another TSR user emailed AQA to confirm you can still retake the legacy a-levels next year and they emailed back saying yes but it's the last time next year
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    (Original post by logicmaryam)
    hey guys im updating the answers as i go along. please let me know if you know the order or marks or answers haha
    You know the one about the origin of the stereosiomers?

    Could you just say optical isomers?
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    (Original post by Chaouki)
    Easiest paper ive ever seen, i really dont see the problem, if any of you need help just dm me, i reckon i got 100% on this, maybe dropped 1 or 2 method marks
    (Original post by Ben_Clare)
    I agree, i dont understand how it was harder than any other past paper.
    You two must have IQ's over 900 or something
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    (Original post by angryredhead)
    you two must have iq's over 900 or something
    its over 9000!
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    (Original post by yung7up)
    No just trolls lol slight difference
    Yung own is?
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    I'd say it was harder than any other chem4 paper, was getting 90+ easy on all of the past papers and I think I would have got an A* in this one too but ofc the thing i'm absolutely terrible at comes at the end for 9 marks, not even sure if I got an A in this paper now i'm pretty sure I lost 7/9 marks in that last question and who knows how many marks lost from random questions here and there.

    I think the grade boundaries will definitely be lower than last year, 84/100 for A* 77/100 for A? that seems semi-fair.
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    -How many different carbon peaks in some compound? (1)
    9

    Draw how hydrogen bonding works (1??)

    N-H - - - - - - - - - - - O=C
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    (Original post by lamis.97)
    I got 1.2 too, i think 3.33 was for another question
    Yeah 1.2 for the salt/acid and 3.33 for something else to do with Ka


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    (Original post by Kay Fearn)
    I'd say it was harder than any other chem4 paper, was getting 90+ easy on all of the past papers and I think I would have got an A* in this one too but ofc the thing i'm absolutely terrible at comes at the end for 9 marks, not even sure if I got an A in this paper now i'm pretty sure I lost 7/9 marks in that last question and who knows how many marks lost from random questions here and there.

    I think the grade boundaries will definitely be lower than last year, 84/100 for A* 77/100 for A? that seems semi-fair.
    i think it will be like 82-4 for an A* , coz it is usually 85-88 for the minimum of an A*
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    You know the one about A or B being protonated i put B and said at A the lone pair on the N is delocalised into the ring/interacts with the delocalised electrons so N is less available for bonding (negative inductive effect) is that right
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    For q8a i said NaOH aqueous and heat, but didn't mention reflux ( Did you have to say reflux or is heat enough?
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    (Original post by SubwayLover1)
    You know the one about the origin of the stereosiomers?

    Could you just say optical isomers?
    mmm i dont think so
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    (Original post by cutelady)
    Yeah 1.2 for the salt/acid and 3.33 for something else to do with Ka


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    Did you guys do Ka divided by [H+] for that? Cuz in the equation Ka/[H+] = [A-]/[HA]

    I worked out the remaining HNO3 after reaction then just worked out the conc of hno3 after and used that as [H+] would this be wrong?
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    (Original post by mhassen1997)
    -How many different carbon peaks in some compound? (1)
    9

    Draw how hydrogen bonding works (1??)

    N-H - - - - - - - - - - - O=C
    i got the same thing
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    (Original post by Emad1993)
    What did u tick for number of carbon environment??
    hey chap, i ticked 9
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    (Original post by logicmaryam)
    mmm i dont think so
    it was only 1 mark? I just said they are optical isomers of each so are mirror images?
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    (Original post by shiney101)
    For q8a i said NaOH aqueous and heat, but didn't mention reflux ( Did you have to say reflux or is heat enough?
    the text book just said boil it with NaOH , i don`t think it needs to be in reflux
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    (Original post by yung7up)
    No just trolls lol slight difference
    whatever you say, chap.
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    (Original post by shiney101)
    For q8a i said NaOH aqueous and heat, but didn't mention reflux ( Did you have to say reflux or is heat enough?
    ii think it mentioned apart from heat - sorry about it and wondering and i think you needed dilute naoh
 
 
 
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