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    (Original post by juniorx)
    lost 3 marks so far
    Don't worry! I'm sure you would've picked up marks somewhere else
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    for the funct group i wrote alkene
    and the one after that i wrote phenol!!
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    How did everyone find it overall?


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    (Original post by super121)
    How did everyone find it overall?


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    Very average. I think the grade boundaries might go up to like June 2012 to around 80 for an A.
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    (Original post by NielsBohrsDad)
    for the funct group i wrote alkene
    and the one after that i wrote phenol!!
    It said in that question not to write down the hydroxyl group, so it's not phenol, but ether
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    (Original post by abzy1234)
    Very average. I think the grade boundaries might go up to like June 2012 to around 80 for an A.
    Yea, I think so too. I sat the June and I found this one easier


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    I wrote ester instead of ether, damn.
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    I thought it was alright, how bout everyone else?

    I know of one mark I've dropped (first question I had 2 Br on the molecule not 4!)

    Did everyone remember to convert 200kg to 200000g?
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    (Original post by super121)
    Yea, I think so too. I sat the June and I found this one easier


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    Wholly agree. The pre-release questions in this paper were more straight forward I feel in comparison to last year.
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    (Original post by abzy1234)
    2 marks
    wait i probably didn't put diene i might have remebered it wrongly but if you draw out 2,6 di methyl oct5 ene is that also the same as 2ethyl 6 methyl hept 2 ene ? can someone confirm this by drawing it out now????
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    I thought the exam went well, now I'm not too sure. unofficial mark scheme anyone?
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    Q 1. Was 3,7-dimethyloct-3-ene
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    (Original post by Davelittle)
    I thought it was alright, how bout everyone else?

    I know of one mark I've dropped (first question I had 2 Br on the molecule not 4!)

    Did everyone remember to convert 200kg to 200000g?
    Yah, I thought it was a really nice paper!

    And yeah, but I nearly got caught out by the mole ratio! If I'm correct, this was the way to do it:

    200kg= 200,000g

    Mr of NaCl= 58.5

    No. of moles in NaCl= 200000/58.5

    2 moles of NaCl is required to produce one mole of chlorine, so (200000/58.5)/2.

    Then 24dm3 multiplied by (200000/58.5)/2. Which should give an answer of around 41,000 to 3.sf.
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    What did people put for that question about the relationship between global warming and the concentration in the trophosphere etc? Cant remember it exactly..
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    (Original post by abzy1234)
    Yah, I thought it was a really nice paper!

    And yeah, but I nearly got caught out by the mole ratio! If I'm correct, this was the way to do it:

    200kg= 200,000g

    Mr of NaCl= 58.5

    No. of moles in NaCl= 200000/58.5

    2 moles of NaCl is required to produce one mole of chlorine, so (200000/58.5)/2.

    Then 24dm3 multiplied by (200000/58.5)/2. Which should give an answer of around 41,000 to 3.sf.
    Didn't we have to work out the Mr of 2NaCl, apart from that I did the same steps


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    (Original post by abzy1234)
    Yah, I thought it was a really nice paper!

    And yeah, but I nearly got caught out by the mole ratio! If I'm correct, this was the way to do it:

    200kg= 200,000g

    Mr of NaCl= 58.5

    No. of moles in NaCl= 200000/58.5

    2 moles of NaCl is required to produce one mole of chlorine, so (200000/58.5)/2.

    Then 24dm3 multiplied by (200000/58.5)/2. Which should give an answer of around 41,000 to 3.sf.

    It didn't ask for sig fig so I put 41025dm^3

    Seems right to me though!
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    (Original post by super121)
    Didn't we have to work out the Mr of 2NaCl, apart from that I did the same steps


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    I worked out 2nacl too
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    (Original post by Fillly)
    What did people put for that question about the relationship between global warming and the concentration in the trophosphere etc? Cant remember it exactly..
    There's a correlation between higher levels of greenhouse gases and increasing temp. It came up in one of the past papers


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    (Original post by super121)
    Didn't we have to work out the Mr of 2NaCl, apart from that I did the same steps


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    No just NaCl, the 2:1 ratio of NaCl to Cl2 meant you had to half the moles of NaCl (not multiply the Mr by 2).
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    (Original post by juniorx)
    wait i probably didn't put diene i might have remebered it wrongly but if you draw out 2,6 di methyl oct5 ene is that also the same as 2ethyl 6 methyl hept 2 ene ? can someone confirm this by drawing it out now????
    if this is wrong can someone tell me why it is wrong?
 
 
 
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