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    for c3 was the volume of hydrochloric acid 60? it said total so wasn't to sure .. think it may of been 30 but was trying to confuse us haha
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    (Original post by AgnKnight)
    How did people found the C3 exam? Sucked for me:confused::confused:
    I think it could have been worse... still lost a lot of marks but still hoping for an A
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    (Original post by ellen199)
    for c3 was the volume of hydrochloric acid 60? it said total so wasn't to sure .. think it may of been 30 but was trying to confuse us haha
    I know I added the 25cm3 sodium hydroxide with 30cm 3 of hydrochloric acid (from the graph) but I got 55 😕


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    Was the ethyl ethanoaye catalyst sulphuric acid?


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    (Original post by science_geeks)
    Anyone have an unofficial mark scheme? ������
    C2 Additional

    6 marker -

    Add soap to burette
    Put water in flask
    Add soap frop byr drop till permanent lather formed
    Record No. of drops taken

    Group 2 better because group 1 would't work for permanent hard water/doesnt thermally decompose upon boiling so no point.Soap reacts with Hard water so group 2 better !

    Let's all add answers to compile a final unofficial mark scheme
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    (Original post by MrTechGamer)
    C2 Additional

    6 marker -

    Add soap to burette
    Put water in flask
    Add soap frop byr drop till permanent lather formed
    Record No. of drops taken

    Group 2 better because group 1 would't work for permanent hard water/doesnt thermally decompose upon boiling so no point.Soap reacts with Hard water so group 2 better !

    Let's all add answers to compile a final unofficial mark scheme
    wait , this is for C3 lol !
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    Both papers were pretty easy, especially the C2 one.
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    (Original post by TheTruthTeller)
    Wat was the emperical formula
    I got Pb2O3
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    (Original post by TheTruthTeller)
    Wat was the emperical formula
    I got pb 2
    O 3


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    (Original post by Kyou)
    Both papers were pretty easy, especially the C2 one.
    What the hell was the five marker in c3
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    (Original post by Kyou)
    Both papers were pretty easy, especially the C2 one.
    Did I have to state the formulas of the ions for the flame test questions.

    I wrote down like all the wordy bits such as Iron (II) and Iron (III) etc , is that ok do u think ?
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    Is Pb2O3 right?
    The ratio was 1:1.5
    So I timsed it by 2
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    (Original post by TheTruthTeller)
    Wat was the emperical formula
    Pb2O3
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    (Original post by MrTechGamer)
    Did I have to state the formulas of the ions for the flame test questions.

    I wrote down like all the wordy bits such as Iron (II) and Iron (III) etc , is that ok do u think ?
    Yeah it's fine
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    (Original post by Jonathanitb)
    I put for the improvement one putting a lid or 'bung' on the beaker to prevent some of the heat loss - does that sound acceptable?
    Me too!!!:cool:
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    (Original post by tombirchy)
    What the hell was the five marker in c3
    That was the hardest question in C3 for me but it was still pretty easy. I put more accurate
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    (Original post by Kyou)
    Yeah it's fine
    If so thats fantastic , but are you sure , because one on of friends told me that the question asked specifically for the formulas sucjh as fe2+ or whatever it is on the data sheet ?
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    (Original post by TheTruthTeller)
    Wat was the emperical formula
    Well I did it wrong and then as soon as I handed my paper in I realised what I needed to do I was so annoyed

    But the answer was Pb2O3
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    Grade boundaries will be slightly lower than last year as 2014 paper was piss. I think 43 for A* for c3 and 45 for A* for C2
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    (Original post by Jules12345)
    Whats the ethical issue for iodine?!
    I put about mass medication.
 
 
 
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