Hey there! Sign in to join this conversationNew here? Join for free
x Turn on thread page Beta
    Offline

    10
    ReputationRep:
    (Original post by lishakb97)
    it told you in the question that it meant stitch
    Well it clearly wasn't clear enough since other people didn't understand the word SUTURE. Anyways, if they needed to use the word stich to clarily then why use any other word to throw people off?
    Offline

    2
    ReputationRep:
    (Original post by lahigueraxxx)
    For the first two equations did you guys use an equilibrium sign?!?!?!?!?!?!!??
    Anyone????
    Offline

    17
    ReputationRep:
    I agree it was unfair that our lack of medical knowledge in a chemistry exam will make us do worse. I spoke to someone who does biology after (who's ultra intelligent) and he said that the reason why one of the horrible things (can't remember their name) was because one of them had a fishy smell, I was just like how the **** was I supposed to know that!

    I think I might need those stitches though after that excuse of an exam.
    Offline

    2
    ReputationRep:
    http://filestore.aqa.org.uk/subjects...W-QP-JUN11.PDF


    the difficulty of that past paper above matches that of today's paper (in my opinion at least).

    for this paper you needed:
    C - 56
    B - 65
    A - 74
    A*- 83

    I think the grade boundaries will match up too

    I hope anyway.....
    Offline

    0
    ReputationRep:
    (Original post by Anno007)
    Edit: oops, misread your comment.
    what are you talking about you dont need to form HCN you just need to form the nitrile which is done by KCN as the nitrile group subbed the Br there is no need for H+ Ions unless the compound was an aldehyde or ketone and you wanted a hydroxy group.


    But that wasn't the question, so all that was needed was ethanol to catalyse
    Offline

    1
    ReputationRep:
    Anyone get 1.2 for the salt/acid question??? Cant remember exactly what the question was asking but it was the last question on the 2nd page
    Offline

    2
    ReputationRep:
    The order were 1 and 2. D increased by 1.5 and E increased by 1.5. However, E was second order, therefore we get the 3.375 times increase in rate 1.5 x 1.5^2.
    Offline

    3
    ReputationRep:
    Did anyone else put you could heat and distill off the alcohol ??
    Offline

    11
    ReputationRep:
    (Original post by Shevo)
    Yes, I put this!
    o-ch2 was a triplet though
    Offline

    1
    ReputationRep:
    (Original post by lukesta23)
    You dont need H+ Ions you puppet you arent making a hydroxy nitrile
    Agreed, it's KCN, Ethanol, Reflux for conversion of haloalkane to a nitrile
    Offline

    2
    ReputationRep:
    (Original post by gcooney4)
    Well it clearly wasn't clear enough since other people didn't understand the word SUTURE. Anyways, if they needed to use the word stich to clarily then why use any other word to throw people off?
    polar bonds can be hydrolysed and polyalkene non polar 2 marks
    Offline

    1
    ReputationRep:
    (Original post by SirRaza97)
    Was the actetate mechanism nucleophilic addition. PLEASE ANSWER
    yep thats what I got
    Offline

    2
    ReputationRep:
    (Original post by AliRock)
    Don't need the 2.
    It won't matter, in the mark scheme it'll be (2-)chloroethanoyl chloride.
    Offline

    2
    ReputationRep:
    Lol the only reason i knew what suture meant was because i watched grey's anatomy instead of revising, ironic
    Offline

    2
    (Original post by SirRaza97)
    Was the actetate mechanism nucleophilic addition. PLEASE ANSWER
    I said that.

    (Original post by FireBLue97)
    hydrogen bonding H2N ------ HN2CH2COOH etc.
    The question said only involve the atoms involved or something, so I did:

    delta plus C=O delta minus O
    delta plus H-N delta minus N

    Hence:

    R-C=O - - - N-H2-R

    Main points IMO:

    Delta plus and negatives
    - - - between O and N
    Offline

    1
    ReputationRep:
    Guys for distinguishing between the acyl chloride and haloalkane put ethanol and white misty fumes for acyl chloride is this right
    Offline

    2
    ReputationRep:
    (Original post by Hclarke9)
    Anyone get 1.2 for the salt/acid question??? Cant remember exactly what the question was asking but it was the last question on the 2nd page
    I did!!!
    Offline

    3
    ReputationRep:
    (Original post by Examguy123)
    http://filestore.aqa.org.uk/subjects...W-QP-JUN11.PDF


    the difficulty of that past paper above matches that of today's paper (in my opinion at least).

    for this paper you needed:
    C - 56
    B - 65
    A - 74
    A*- 83

    I think the grade boundaries will match up too

    I hope anyway.....
    gonna need them to be a bit lower than that son :^)
    Offline

    1
    ReputationRep:
    (Original post by lahigueraxxx)
    I did!!!
    Thank God!! Hopefully its right
    Offline

    1
    ReputationRep:
    (Original post by 6548412)
    Guys for distinguishing between the acyl chloride and haloalkane put ethanol and white misty fumes for acyl chloride is this right
    It's supposed to be water, but I'm not sure whether ethanol would work or not. The observations are correct.
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: August 27, 2016
Poll
Do you agree with the proposed ban on plastic straws and cotton buds?

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.