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    (Original post by FormlessBowl)
    It would go into water, the products you gave definitely work, but I think these do as well. Also where would that H attatch to the ethanoic acid?


    NO3- H2O and CH3C+O makes sense for me, losing an OH with the H of HNO3
    That's why I doubted my answer, however I've linked the markscheme with the answer below this quote:

    (Original post by FormlessBowl)
    NO2 has a positive charge, NO3 is negative though
    Markscheme for reaction with ethanoic acid and nitric acid from a different exam board - only difference is that this is with propanoic acid, page 8 part (d):
    http://www.ocr.org.uk/Images/61528-m...ments-june.pdf
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    So sneaky... I assumed the -CH2CH2- had to be attached to the O-CH3 not the -OH damn -_-


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    (Original post by K2Cr2O7)
    I put H2O.
    haloalkane - no change
    Acyl chloride - misty fumes
    ???? not sure though
    Using AgNO3 is the answer AQA were probably looking for
    however i wrote the same as you and im 99% we are right
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    (Original post by lishakb97)
    I'm glad that you did well but it definitely was a hard paper compared to previous years, many people found it hard so the boundaries will be low
    It was a joke, one of my favorite sources of entertainment is boasting for getting 100% in really hard tests, although its funnier in real life...

    In reality I did terribly in that paper, but chem5 is much easier than chem4 imo so ill have to make up for it. I got an A at AS and i think this paper was a high D low C, so with good chem 5 i might scrape aa low A or high B.
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    (Original post by Weeksy97)
    I think the answer will probably be that the polyester can biodegrade in the wound over time because it is hydrolysed. This means it doesn't have to be removed. Not sure if this is correct though...
    yea thats what I wrote, about the biodegradability
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    (Original post by SubwayLover1)
    Did anyone else put you could heat and distill off the alcohol ??
    yes!!
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    (Original post by 1magicmo)
    Attachment 550003
    This is what I got
    correct
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    (Original post by cowie)
    So sneaky... I assumed the -CH2CH2- had to be attached to the O-CH3 not the -OH damn -_-


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    It's very cheeky of them... I'm sure if you explained everything you will get most of the marks!
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    long story short 2016 is going to be the year with no vets, medics or dentists
    Thanks aqa
    Spoiler:
    Show
    :congrats:
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    Name:  WP_20160614_17_31_50_Pro[1].jpg
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    this is the structure for question 9

    it was an awful sneaky question guys i know
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    chem 5 better be better i swear they're going to screw us over regardless but i neeeeed that ums!
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    (Original post by SirRaza97)
    How many makrs do you think will I get for syaing the structure of R was

    ch3-o-ch2-ch2-c(ch3)2-oh? Providing all my working is there?
    i did the same as you. id say 2 marks lost, one for piecing it together and contradicting ourselves by saying it cant be a tertiary alcohol. second mark for structure of R
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    (Original post by House6797)
    Using AgNO3 is the answer AQA were probably looking for
    however i wrote the same as you and im 99% we are right
    I did this and I'm confident it will get the marks!
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    Revision went great, right until we got to the exam and they gave us a COMPLETELY DIFFERENT SYLLABUS
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    (Original post by 09aghandhi)
    It was a joke, one of my favorite sources of entertainment is boasting for getting 100% in really hard tests, although its funnier in real life...

    In reality I did terribly in that paper, but chem5 is much easier than chem4 imo so ill have to make up for it. I got an A at AS and i think this paper was a high D low C, so with good chem 5 i might scrape aa low A or high B.
    oh ok haha my mistake, same and I need 3a's
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    (Original post by ELCRE)
    I only managed to get half way through the last question anyone else?


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    Me tooooo (
    Everyone is discussing the final structure but I only managed to figure out half of it before the invigilator told us to put our pens down...
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    For the stitches question I wrote that it was biodegradable and could be hydrolysed whereas the polyalkene was strong non polar etc
    Did I have to mention therefore it can be broken down by bodily fluids?
    The more and more I think about the paper I'm getting so worried about it.
    Also for the last question I did the structure as the tertiary alcohol that everyone mentioned, how many marks do you think I'd get with like the structures I drew and pointing out that there was an OH alcohol and a C-o bond using the IR values?
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    CH3CO + intermediate reactive species 1 mark
    use this to show electrophilic substitution reaction 2 marks
    Is this right ? or did you have to give the whole equation to show the reactive intermediate being formed with alcl3
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    (Original post by FireBLue97)
    CH3CO + intermediate reactive species 1 mark
    use this to show electrophilic substitution reaction 2 marks
    Is this right ? or did you have to give the whole equation to show the reactive intermediate being formed with alcl3
    no you're right
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    (Original post by lishakb97)
    oh ok haha my mistake, same and I need 3a's
    Yep, i need AAb for Surrey, not looking all that good so far, i was kinda relying on chem being a deffo A cause i got physics, which will be a B at best
 
 
 
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