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AQA CHEM5 A2 Chemistry - 19th June 2013

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What a terrible paper!!!!. No amount of revision I put in especially the last night would have been good enough. It was too tough beyond words. Any ideas what the grade boundaries might be?
Reply 2441
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extons
10
And yes, the final temperature of the solution when the substance had dissolved in it was 284K.
Original post by temi1234
I got 1:3 ratio for the last question


Me too! :-)

As anybody else get +905 for the Born Haber cycle at the start?
Reply 2443
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Anshul91
For the units of the frequency can you get away with putting s I didn't put s-1
What a terrible paper!!!!. No amount of revision I put in especially the last night would have been good enough. It was too tough beyond words. How did you all find it?
Reply 2445
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extons
10
Original post by Anshul91
For the units of the frequency can you get away with putting s I didn't put s-1


No, the units are s^-1 (Hz) not s.
Original post by Anshul91
I don't think anyone is confident enough to make one haha, shows how difficult it was!


True, but if someone has a copy of the paper then that would be most useful. :smile:
Reply 2447
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Cwestby
Original post by Anshul91
For the units of the frequency can you get away with putting s I didn't put s-1


No, sorry.
Original post by Cwestby
i think ive dropped about 9marks, will that be okay for an A*?



Yes mate. That should be fine. I just wish I could say the same. The paper was a nightmare. :frown:
Reply 2449
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marleyxd
For the transition metal complexes questions, did people write ionic or overall equations?

I wrote both for each reaction because it said write overall equations....
For the aldehyde question, I used hexaaquacobalt (II)and(III), will that be OK?
Reply 2451
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Cwestby
Original post by mulac1
I remember equations involving 4Co2+ and 4Co3+...


yes for the catalyst question
Original post by Cwestby
i think ive dropped about 9marks, will that be okay for an A*?


that's enough for 100%
Reply 2453
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Cwestby
Original post by Simonthegreat
Yes mate. That should be fine. I just wish I could say the same. The paper was a nightmare. :frown:


it was a lot more difficult than the past papers as i was getting 97ish on all of those
Meh, I think I've dropped about 15 marks. :frown: What grade would that be?
lol wtf was that
Original post by Xiomara
For the aldehyde question, I used hexaaquacobalt (II)and(III), will that be OK?


What was the aldehyde question?
For the reaction demonstrating why MgO was a basic oxide, why was it worth two marks? I hazarded MgO + 2HCl --> MgCl2 + H20, but I'm not sure how it amounts to two marks when the (arguably harder) one with NaOH and P4O10 was only worth 1.


Also, question 7 was probably the most tedious thing I've ever had to do in my life.
Original post by cat-lover
Meh, I think I've dropped about 15 marks. :frown: What grade would that be?


A*
Reply 2459
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theslav
I think it was quite good, most of the questions came up in the past papers just in a different context, hoping for around 80/100

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