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    (Original post by steviep14)
    The colour change one confused me...
    There was no colour change right... as you can't oxidise a tertiary alcohol? D:
    I think that that's the answer. xD It's what I put.
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    (Original post by Davelittle)
    the double bond number has to be the lowest, not the methyl groups
    no your incorrect numbering of methy groups takes priority
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    (Original post by King Hotpie)
    For the curly arrow one, I also drew an arrow from the F-H bond to the F, as well as from the C-Cl bond to the Cl and the F to the C. Was this wrong of me? I thought it also produced a positive hydrogen ion which would later go on to react with the hydrogen chloride?
    Curly arrows from partially negative F to partially positive C then curly arrow from C-Cl bond to partially negative Cl
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    (Original post by Davelittle)
    the double bond number has to be the lowest, not the methyl groups
    Pretty sure you won't get penalised for having the methyl groups with the lower number.
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    (Original post by steviep14)
    The colour change one confused me...
    There was no colour change right... as you can't oxidise a tertiary alcohol? D:
    I thought that! I made sure I put the potassium dichromate was orange, to make sure I got at least one mark if I was wrong! I think all you had to do was put "no change as tertiary alcohols do not readily oxidise" for both marks though.
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    (Original post by steviep14)
    Was the "Hydrogen" thing...
    150C nickel catalyst.. for the conversion one...

    and the equilibrium;

    decrease for higher temp
    increase for higher pressure?
    what was the hydrogen question? because I remember writing H2 gas + platinum catalyst at RTP :confused:
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    I thought it was alright, did everyone get electrophilic addition for the underlining question. For the dm3 question, i came back to it at the end and got the correct answer (41..) but forgot about s.f.!!!!!!

    I think that unfortunatly it will be high for an A maybe 76-80 but can't see it surpassing 80.
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    (Original post by nick d terrier)

    no your incorrect numbering of methy groups takes priority
    http://chemwiki.ucdavis.edu/Organic_...he_Basic_Rules

    I am correct, read that
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    (Original post by madrevision)
    what was the hydrogen question? because I remember writing H2 gas + platinum catalyst at RTP :confused:
    I put platinum catalyst at room temp
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    (Original post by Welbeck)
    I thought it was alright, did everyone get electrophilic addition for the underlining question. For the dm3 question, i came back to it at the end and got the correct answer (41..) but forgot about s.f.!!!!!!

    I think that unfortunatly it will be high for an A maybe 76-80 but can't see it surpassing 80.
    the dm3 wasnt s.f. so you're ok!
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    (Original post by King Hotpie)
    For the curly arrow one, I also drew an arrow from the F-H bond to the F, as well as from the C-Cl bond to the Cl and the F to the C. Was this wrong of me? I thought it also produced a positive hydrogen ion which would later go on to react with the hydrogen chloride?
    Yeah that's right, I don't think you needed to draw an arrow from the F-H bond to the F, but I'm sure it won't matter.

    I don't think you needed the HCL part as well, as it was only 2 marks

    (Original post by steviep14)
    The colour change one confused me...
    There was no colour change right... as you can't oxidise a tertiary alcohol? D:
    Yup. Remains an orange colour, as potassium dichromate is an orange colour.
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    (Original post by Davelittle)
    the dm3 wasnt s.f. so you're ok!
    I thought it said 3 s.f.?

    Has anyone uploaded the paper?
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    Well... didn't go too bad then
    Think probably 75 for an A
    then maybe drop of 7 per grade boundary..

    For the 5 marker I wrote;

    Propan-1-ol forms pd-pd interactions (hydrogen bonds) due to the hydroxyl group..
    Propene only id-id interactions...
    Propan-1-ol higher bp as pd-pd stronger than id-id and so more energy required to break these IMBs.. obviously expanded a bit but is that at least 3/5?
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    Anyone else forget that N2O was a dative molecule?
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    (Original post by muonz)
    Pretty sure you won't get penalised for having the methyl groups with the lower number.
    You probably will because it is the convention, take a read of that http://chemwiki.ucdavis.edu/Organic_...he_Basic_Rules
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    (Original post by xomaxhox)
    Anyone else forget that N2O was a dative molecule?
    it had a diagram of it on the pre release
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    (Original post by abzy1234)
    Yeah that's right, I don't think you needed to draw an arrow from the F-H bond to the F, but I'm sure it won't matter.

    I don't think you needed the HCL part as well, as it was only 2 marks



    Yup. Remains an orange colour, as potassium dichromate is an orange colour.
    no, I didn't include the HCl part, it was just my logic as I went through inner turmoil with 5 minutes left deciding whether or not to add another arrow!
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    (Original post by Davelittle)
    it had a diagram of it on the pre release
    I still managed to mess it up anyway
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    (Original post by Davelittle)
    nickel catalyst 150degrees AND 5 atm

    yes thats right for the equilibrium one

    I put Platinum at room temperature :/ The past papers I've been doing were always on off about nickel when I put it down
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    (Original post by Welbeck)
    I thought it said 3 s.f.?

    Has anyone uploaded the paper?
    the frequency one was 3 s.f.

    I could swear I checked hmmmmm
 
 
 
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