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OCR A2 CHEMISTRY F324 and F325- 14th and 22nd June 2016- OFFICIAL THREAD watch

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    For the question with HCL is it not NH2+ not NH3+ because the structure was NH so if you add HCL it would turn into NH2+
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    (Original post by stephaniechan)
    For the question with HCL is it not NH2+ not NH3+ because the structure was NH so if you add HCL it would turn into NH2+
    I can't remember the exact phrasing of the question but did it imply exactly one mole of HCl? Otherwise it would not be incorrect to assume it would form NH3+ as this in reality is what could happen?
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    (Original post by stephaniechan)
    For the question with HCL is it not NH2+ not NH3+ because the structure was NH so if you add HCL it would turn into NH2+
    when you hydrolyse peptides with acid you get NH3+
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    (Original post by VMD100)
    I can't remember the exact phrasing of the question but did it imply exactly one mole of HCl? Otherwise it would not be incorrect to assume it would form NH3+ as this in reality is what could happen?
    it specifies dilute which is a bit akward. is 6M dilute? not really imo.
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    (Original post by stephaniechan)
    For the question with HCL is it not NH2+ not NH3+ because the structure was NH so if you add HCL it would turn into NH2+
    I put NH2+ it really confused me but I think it is NH3+ unfortunately
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    (Original post by emmab98)
    I put NH2+ it really confused me but I think it is NH3+ unfortunately
    Yea i think it was NH3+/Cl- because amonia usually has three bonds and only one was with the benzene ring so there we 2Hs and the the extra H making it NH3+
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    I understand what reduction and oxidation is but does anyone have any good ways or remembering what an oxidising and reducing agent is? Keep on getting tripped up
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    (Original post by Hunnybeebee)
    I understand what reduction and oxidation is but does anyone have any good ways or remembering what an oxidising and reducing agent is? Keep on getting tripped up
    The compound that gets reduced is the oxidising agent. As it causes another compound to get oxidised.

    The compound that gets oxidised is the reducing agent. As it causes another compound to get reduced.


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    (Original post by Hunnybeebee)
    I understand what reduction and oxidation is but does anyone have any good ways or remembering what an oxidising and reducing agent is? Keep on getting tripped up
    you need an oxidising agent (something that can be reduced) to oxidise, reducing agent (something that can be oxidised) to reduce.
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    What grade would 40/60 be ? 😭😭😭😭😭😭😭😭 😭
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    Does anyone know how much the chiral carbon q was worth????????
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    (Original post by coolgamer)
    What grade would 40/60 be ? 😭😭😭😭😭😭😭😭 😭
    Would be a C grade hopefully
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    (Original post by Mr Average.98)
    Would be a C grade hopefully
    It was an easy paper but I did so many silly mistakes I want to die
    what do you think you got
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    anyone have a better unofficial mark scheme? cause the one on this thread only has 38 marks and i really wanna know how many marks i think i got!
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    also was it NH3+ or NH3+cl-? nor would they accept both?
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    (Original post by coolgamer)
    It was an easy paper but I did so many silly mistakes I want to die
    what do you think you got
    Checking with unofficial mark scheme and asking a million ppl.. i believe i lost 10 marks (being really stringent on myself ).. so 50 marks would be an A i believe hopefully
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    (Original post by Mr Average.98)
    Checking with unofficial mark scheme and asking a million ppl.. i believe i lost 10 marks (being really stringent on myself ).. so 50 marks would be an A i believe hopefully
    Im in the same boat as you, thinkibg ive lost 10 marks out of sheer stupidity, its so ****ing irritating cause i was generally well prepared. My fear is though that bdcause it was such a simple paper 52/60 could be an A maybe even 53.
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    (Original post by Spwoosh)
    Im in the same boat as you, thinkibg ive lost 10 marks out of sheer stupidity, its so ****ing irritating cause i was generally well prepared. My fear is though that bdcause it was such a simple paper 52/60 could be an A maybe even 53.
    Thats a interesting possibility.. but i would say it will be an A =50 marks because some questions were generally sly. And compare them with other papers .. where grade boundaries were 48 =A .. this paper was comparatively harder due to the ambiguity. So yh .. cant say for sure .. but im confident that it will be an A=50
    .
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    This forum blew up with that f324 paper😂

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    (Original post by Mr Average.98)
    Checking with unofficial mark scheme and asking a million ppl.. i believe i lost 10 marks (being really stringent on myself ).. so 50 marks would be an A i believe hopefully
    Hi there sorry but do you know how much that chiral carbon question was??? Im so worried coz i didnt see that question so i didnt answer it
    It was a question where ypu had to mark the chiral c or something like that
 
 
 
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