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    (Original post by CSLady)
    How are people revising all the reactions ? What different techniques seem to be working for people ? I am really struggling to remember which reagent switch which reactions.


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    The only thing that works for me is repetition😩


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    Does anyone know how to find markschemes to papers that are older than 2008? The answers to the exam questions in the OCR textbook aren't in the back of the book and I can't find them on the Internet

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    (Original post by LThomas694)
    Does anyone know how to find markschemes to papers that are older than 2008? The answers to the exam questions in the OCR textbook aren't in the back of the book and I can't find them on the Internet

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    Perhaps they are on the CD that comes with the textbook (have honestly no clue what's on the CD ) ?


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    (Original post by LThomas694)
    Does anyone know how to find markschemes to papers that are older than 2008? The answers to the exam questions in the OCR textbook aren't in the back of the book and I can't find them on the Internet

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    They're on the CD that comes with the book. Even then it isn't official mark scheme but a detailed walk through on how to answer the question


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    (Original post by thad33)
    They're on the CD that comes with the book. Even then it isn't official mark scheme but a detailed walk through on how to answer the question


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    (Original post by CSLady)
    Perhaps they are on the CD that comes with the textbook (have honestly no clue what's on the CD ) ?


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    Okay, thank you

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    You are literally my life saver. Thank you so much.
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    This is pretty much what I needed!!!!!!
    Thank you very much
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    If anyone wants to use my sets on quizlet for revision my username is lucyannthomas. I've only made two so far but I'm gonna be adding some more

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    Absolutely love transition metals loool. Hoping that the exams go well this year but ocr lol

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    (Original post by Hunnybeebee)
    Absolutely love transition metals loool. Hoping that the exams go well this year but ocr lol

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    F325 is going to be horrendous this year


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    (Original post by thad33)
    F325 is going to be horrendous this year


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    I can imagine D: why do you say that?

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    (Original post by Hunnybeebee)
    I can imagine D: why do you say that?

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    F324 was horrendous last year, F235 wasn't too bad. I think it'll switch this year


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    (Original post by thad33)
    F324 was horrendous last year, F235 wasn't too bad. I think it'll switch this year


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    I found f321 to be awful last year and f322 went well so they must like switching lol.

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    (Original post by Hunnybeebee)
    I found f321 to be awful last year and f322 went well so they must like switching lol.

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    I heard f321 went batshit crazy for most people. I don't understand why they do it. Obviously test people's ability but no need to throw in so many curveballs.
    It causes the boundaries to close up and the gap between the best and worst closes.

    Anyway, last year of the spec so expect a train wreck of exams this summer


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    I came across a question in the June 2012 F321 paper, and I'm not entirely sure how to work it out.

    Question:
    A student is given a sample of an unknown Group 2 chloride.
    - The student dissolves 2.86g of the chloride in water.
    - The student adds excess aqueous silver nitrate.
    - 8.604g of solid silver chloride, AgCl, forms.

    In part i) I worked out that there are 0.06 moles of AgCl

    Part ii) asks: to deduce the amount in moles of the group 2 chloride that the student dissolves. Hence deduce the relative atomic mass and identity of the group 2 metal. Give RAM to 1 d.p.


    Help and explanation please?
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    (Original post by gooner_hsj)
    I came across a question in the June 2012 F321 paper, and I'm not entirely sure how to work it out.

    Question:
    A student is given a sample of an unknown Group 2 chloride.
    - The student dissolves 2.86g of the chloride in water.
    - The student adds excess aqueous silver nitrate.
    - 8.604g of solid silver chloride, AgCl, forms.

    In part i) I worked out that there are 0.06 moles of AgCl

    Part ii) asks: to deduce the amount in moles of the group 2 chloride that the student dissolves. Hence deduce the relative atomic mass and identity of the group 2 metal. Give RAM to 1 d.p.


    Help and explanation please?
    Ok so you know there are 0.06 moles of Cl. Think about if it's a group 2 chloride what is the equation nCl2 so there must be 0.06/2 moles (because of the moles of AgCl).
    Use Mr = mass/ mole
    Then use the periodic table to work out which group 2 compound it is !
    Take it one step at a time !


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    What do you guys think will come up this year in the exam? for F324/F325
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    (Original post by cream123)
    What do you guys think will come up this year in the exam? for F324/F325
    Pretty much everything comes up


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    Yeh- best to cover all bases
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    Guys with the copper iodine equation, it says two of the iodide ions do not change oxidation state?

    I was wondering how this fits into the half equations?

    So I thought it would be:

    Cu2+ + e- --> Cu+

    2I- --> I2 + 2e-

    But I know 2 iodide ions are missing from the overall equation so where would we put them? Or is it a matter of just balancing each side? Name:  ImageUploadedByStudent Room1457834109.472455.jpg
Views: 422
Size:  190.0 KB


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