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OCR B (Salters) F332 Tuesday 4th June 2013 Exam Discussion (Now Closed) watch

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    (Original post by Ali_Ludley)
    Break both of them, there should have been 4Br in the chain.
    Yh I just searched it up, but thanks! I put 4br
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    (Original post by juniorx)
    was that one mark?I definetly got that wrong because i put carbonyl...
    Yea, 1 mark


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    (Original post by Ali_Ludley)
    Break both of them, there should have been 4Br in the chain.
    Ah balz. I forgot to put on the other two bromine atoms.
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    (Original post by Kathiye)
    You had to look for the longest chain - there should have been an 8 carbon chain with two methyl groups on it. I think that you probably had one of the methyl groups as the end of the chain instead.
    but it said it was z isomer. i put 2ethyl6methyl hept2diene where the ethyl and methyl gropus are on the same side???
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    what about the molecular formula of linalool or something..... and was the second functional group alkoxy?
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    (Original post by juniorx)
    why is it dimethyl. i thought there was a branch on the second carbon with 2 carbons surely making it an ethyl??? And i got a hept 2 diene
    If you draw out the full structural formula, it's like H3C-C-CH3; making it dimethyl.

    I also got hepta-4-ene. I don't think it was a diene, as there was only one double bond if I remember correctly?
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    (Original post by exams567)
    what about the molecular formula of linalool or something..... and was the second functional group alkoxy?
    C10H16 ring a bell?

    It was an ether, am not to sure if the mark scheme will allow alkoxy.
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    (Original post by exams567)
    what about the molecular formula of linalool or something..... and was the second functional group alkoxy?
    C10H16 and ether
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    i got c10 h18?
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    Well I put the wrong answer anyway ( Nitrogen(III) dioxide ) and I think nitrite is right.
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    (Original post by EstebanK0)
    Ah man. I put 2,6-dimethyloct-5ene
    Initially put down 3,7-dimethyloct-3-ene but scribbled it out.
    I put that as well


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    (Original post by abzy1234)
    If you draw out the full structural formula, it's like H3C-C-CH3; making it dimethyl.

    I also got hepta-4-ene. I don't think it was a diene, as there was only one double bond if I remember correctly?
    dam i included one of the methyl groups as part of the polymer chain and probably the bit that curved with 2 carbons as an ethyl
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    was that systematic name meant to be dec-1-ene?

    were the answers for the last querstion all in the article towards the end?

    was the answer to ppm question 780000000?
    was one of the answers like 1.17x10^15
    and the one before that like 7. something

    err
    the equilibrium questions were kinda confusing tbh. what did everyone put?
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    Question 1 was a b****
    The rest of the paper was ok though
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    if i write outside the space for the answers or underneath the lines do i not et the marks for that or what happens?
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    (Original post by abzy1234)
    If you draw out the full structural formula, it's like H3C-C-CH3; making it dimethyl.

    I also got hepta-4-ene. I don't think it was a diene, as there was only one double bond if I remember correctly?
    how many marks was that?
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    (Original post by NielsBohrsDad)
    if i write outside the space for the answers or underneath the lines do i not et the marks for that or what happens?
    I hope not, I do that all the time. o.o I believe that you get the marks as long as it's obvious that it's part of your answer, and it's inside the box around the whole page. (Tell me if I'm wrong, but I really hope that I'm not. D: )
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    (Original post by juniorx)
    how many marks was that?
    2 marks
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    i iwish grade boundary is 70 or 69 or 68 for an a
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    (Original post by abzy1234)
    2 marks
    lost 3 marks so far
 
 
 
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