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    (Original post by TheRAG)
    What did everyone put for the last question? The one where it asks you how an increase of pH affects the protein structure?
    COOH becomes COO- i think I put
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    (Original post by TheSprintKing)
    How did you work out the 97.1 question?
    find moles of dichromate, x6 then x mr of iron, that number diveded by mass added x100
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    I wrote all 3 IM bonds lol will i still get the 2 marks or nah
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    (Original post by TikiLodge)
    What oxidation states did every get for the V? I got +4 then the rest +5
    same
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    (Original post by LordGaben)
    Really? I thought last years paper was really easy
    You found June 2014 easy?:confused: How?
    Question 2 was awful
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    (Original post by Jaz_ace)
    if there is a increase in ph doesnt da mean that the NH gains a hydrogen ions, becomes a base???
    Increase in ph means solution is more basic so more OH- ions
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    (Original post by TheRAG)
    You found June 2014 easy?:confused: How?
    Question 2 was awful
    I'll take colorimetry over the rate of hydrolysis any day haha. I guess I did it as a mock so its probably not the same.
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    (Original post by LordGaben)
    COOH becomes COO- i think I put
    That seems correct, I put OH- - O- + H+, I hope I still get the mark but I doubt I will
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    any ideas on grade boundaries
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    (Original post by LordGaben)
    I'll take colorimetry over the rate of hydrolysis any day haha. I guess I did it as a mock so its probably not the same.
    Oh how did you confirm that rate was 1st order?
    I found the ratio between (30 and 100) and (220 and 290) (both have a difference of 70) and found both ratios to be the same (0.77)
    And did you get 1x10-6 s-1 for the rate constant?
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    (Original post by Jaz_ace)
    any ideas on grade boundaries
    I think this paper was about the same as June 12
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    (Original post by pipsini)
    In question 1 what were the two words to best describe the condensation reaction? neutralisation and elimination? (I'm probably wrong)
    How was it supposed to be neutralisation?

    Elimination is correct though
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    (Original post by TheRAG)
    Oh how did you confirm that rate was 1st order?
    I found the ratio between (30 and 100) and (220 and 290) (both have a difference of 70) and found both ratios to be the same (0.77)
    And did you get 1x10-6 s-1 for the rate constant?
    I messed that bit up. i only managed to identify when the conc halved but since I left it for the end I was short on time :/ and yes i did get that for my rate constant
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    What did you all put for the very first question?
    I put moderately concentrated hydrochloric acid
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    (Original post by TheRAG)
    How was it supposed to be neutralisation?

    Elimination is correct though
    Acid reacting with a base. Carboxylic acid with amine.
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    (Original post by TheRAG)
    What did you all put for the very first question?
    I put moderately concentrated hydrochloric acid
    Ammonia. Wasn't it dichloroalkane to diamine?
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    (Original post by jonesy123)
    Acid reacting with a base. Carboxylic acid with amine.
    Addition and elimination. I think its in the spec
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    (Original post by LordGaben)
    Addition and elimination. I think its in the spec
    I put addition as well, can you confirm this?
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