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OCR Gateway B C4 C5 C6 Watch

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    (Original post by azizkahdijaaaa)
    s**** i wrote Cl2 +2MgBr -> 2MgCl + 2Br
    well done -_-
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    Predicted grade boundaries
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    (Original post by Hannahglen12)
    Predicted grade boundaries
    68 for an A*? Is that too high lol.
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    yo what the titration question is 0.45moldm-3 and for the precipitation 6 marker is swear you only need the ionic equation
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    (Original post by TheNlee)
    https://www.thestudentroom.co.uk/sho....php?t=4791400
    i've already made another unofficial mark scheme
    Cheers
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    (Original post by TheNlee)
    yo what the titration question is 0.45moldm-3 and for the precipitation 6 marker is swear you only need the ionic equation
    If you go to page one some person got 0.045 mol/dm^3 and explained how

    also i wasn't sure but i put it in anyway
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    (Original post by urgurlbecca)
    If you go to page one some person got 0.045 mol/dm^3 and explained how

    also i wasn't sure but i put it in anyway
    meh but what about the precipitation q, did it ask for the full or ionic equation
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    eyy isnt the displacement equation wrong no?
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    (Original post by TheNlee)
    meh but what about the precipitation q, did it ask for the full or ionic equation
    From what I recall it was the full equation because I remember trying to balance it in the last five minutes and then lamenting over how I'd gotten it wrong after the exam was over. It might have been the ionic half equation, maybe I read the question wrong.
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    (Original post by azizkahdijaaaa)
    eyy isnt the displacement equation wrong no?
    what should it be? from what i recall the chlorine displaced the solution of sodium bromide?
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    (Original post by urgurlbecca)
    68 for an A*? Is that too high lol.
    Hoping it to be slightly lower. I think I got low to mid 60's. Any predictions to a grade. Hated the paper
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    (Original post by urgurlbecca)
    what should it be? from what i recall the chlorine displaced the solution of sodium bromide?
    check it on my unofficial markscheme
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    (Original post by urgurlbecca)
    what should it be? from what i recall the chlorine displaced the solution of sodium bromide?
    isnt br2?? does it make a difference
 
 
 
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