Hey there! Sign in to join this conversationNew here? Join for free
    Offline

    2
    ReputationRep:
    (Original post by Magicalgeofray)
    you could create a google docs??
    https://docs.google.com/document/d/1...vYh3NHFKs/edit Try this, inbox me if you want to be admin and feel you confidently know most of the answers
    Online

    13
    ReputationRep:
    Well I think it depends on the specific wording because if it says 'which COMPOUND is formed' then NH3+ is a lost mark bc it's an ion not a compound, however if I remember correctly, it just asked for the products? So if it's products then NH3+ is probs ok..
    Offline

    2
    ReputationRep:
    (Original post by KB_97)
    Usually they allow either nh3+ or nh3+cl- right?
    If they left it ambiguous, then you're correct. However, this isn't the case.
    Offline

    2
    ReputationRep:
    Even though a lot of people on here say that it went really well, people who found it really hard aren't going to broadcast it. Definitely do not think an A will be above 50/60 as there are always those who struggle and bring averages etc down.
    Offline

    2
    ReputationRep:
    (Original post by greenorange)
    What was the answer to first question? I said the one with the 2 double bonds, as it could be in trans configuration which contributes to heart disease.
    I'm pretty sure it was the first one, due to the fact that it was a saturated fatty acid whose molecules could pack tightly together. which would contribute to the build up of LDL cholesterol, which is a risk factor in heart disease
    Offline

    2
    ReputationRep:
    (Original post by Bubbleszz)
    Answers for the NMR table? as in the chemical shift values haha
    I put 1.2 ppm
    2.6 ppm
    3.6 ppm
    Offline

    4
    ReputationRep:
    For the triglyceride, would they allow if you drew the ester of glycerol but then used -C17H28 or whatever it was as the fatty acid tail instead of the structural (CH2)(CH3) ??
    Offline

    10
    ReputationRep:
    (Original post by chanda01)
    For the last question, if you get F wrong, you get G and I wrong too right? Meaning forgetting the methyl group and hence putting down a straight chain since G had 4 carbon environments so F would have had to had the methyl group? In this case, would you get 3/4 marks as you got F wrong, but G and I would be ecf? or would you just get 1/4 because you got F wrong hence G and I too?
    anyone...?
    Offline

    2
    (Original post by dairychocolate)
    I said that the first one was saturated since it had no double bonds, therefore it was a bigger risk.
    But the book says that trans fats behave like saturated fats in the body idek
    Offline

    0
    ReputationRep:
    (Original post by Derek12353)
    yes this is exactly what i got
    This is wrong as it wouldn't oxidise to a a ketone
    • TSR Support Team
    • Very Important Poster
    • Welcome Squad
    Offline

    20
    ReputationRep:
    TSR Support Team
    Very Important Poster
    Welcome Squad
    (Original post by EricPiphany)
    Questionable, it was nylon not Kevlar. But I don't really know.
    I put clothing fibre.

    Feel I got 55-59/60
    Offline

    2
    ReputationRep:
    (Original post by k.russell)
    1. As they specifically specified HCL, you had to write NH3 Cl or NH3+ Cl-...

      I knew a lot of people would miss that out.
    damn and to think I thought I was slick for remembering to put NH3+
    I reckon nh3+ will be in the allowed column
    Offline

    2
    ReputationRep:
    (Original post by Yazmin123)
    i still think nh3+ is correct
    What you think is your choice, I'm not here to argue that I am correct etc

    I've learnt the hard way from this, and thus I remembered in the exam. My point is, this test was fairly straightforward but there were many chances to make mistakes, this being one of them.
    Offline

    2
    ReputationRep:
    Google docs mark scheme, please be responsible when adding answers and i will make admins the best contributors: https://docs.google.com/document/d/1...vYh3NHFKs/edit
    Offline

    1
    ReputationRep:
    (Original post by greenorange)
    I put 1.2 ppm
    2.6 ppm
    3.6 ppm
    yey I did the same thing but i did 2.7 haha
    Offline

    15
    ReputationRep:
    for the hydrolysis of amide question i had a acyl chloride drawn instead of a carboxylic acid because it said dilute HCl not aqueous i dont know tho.
    Offline

    1
    ReputationRep:
    (Original post by izaa29)
    For the percentage yield question I got something like 7.26 g

    Omds I feel like I'm the only one who failed this paper

    It was easy but I made so many silly mistakes I'm so upset now
    dw same here, so disappointed...
    Offline

    2
    ReputationRep:
    (Original post by MrZebraCookie)
    But the book says that trans fats behave like saturated fats in the body idek
    but the other could be either cis or trans it's just have double bonds so the first one is the correct one
    Offline

    1
    ReputationRep:
    Think I'm the only that got 2.56 for the mass where you were given the percentage yield lol, looks like the right answer is 2.66. I must have made an mr error but hopefully I'll still get 2 working marks.

    Also I said Kevlar for the polyamide question, but I don't think I'll get the mark, clothing fibres is what I should have put.

    Other than that; the paper was a lot nicer than last years.
    Offline

    2
    ReputationRep:
    (Original post by Kvothe the arcane)
    I put clothing fibre.

    Feel I got 55-59/60
    I put clothing as its use, do you think that will be sufficient?
 
 
 
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • Poll
    Has a teacher ever helped you cheat?
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

    Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

    Write a reply...
    Reply
    Hide
    Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.