Turn on thread page Beta
    Offline

    1
    ReputationRep:
    (Original post by Kayak)
    Are we allowed to discuss the exam on here yet, or do we not have to wait until a certain time...?
    It is only Edexcel, CIE, STEP and IB exams you have to wait for since this is ocr we can talk freely
    Offline

    12
    ReputationRep:
    (Original post by cleverbong)
    I drew it on the carboxylic acid group. Totally guess.
    I done this too.. in the assumption that the COOH donated the proton to the amine..
    Offline

    1
    ReputationRep:
    (Original post by thatgu)
    It is only Edexcel, CIE, STEP and IB exams you have to wait for since this is ocr we can talk freely
    Ah cool thanks
    Offline

    0
    ReputationRep:
    For the question about why a benzene ring can't go through addition but it can go through substitution. I put that adding/taking away electrons will disrupt the delocalised system and make the benzene less stable. Is that right/sorta right?
    Offline

    1
    ReputationRep:
    I didn't like the last question I don't think that I put enough down for five marks the most marks for a diagram I think I have ever seen.
    Offline

    2
    ReputationRep:
    Omg- loved it! All the stuff I could do and no evil nitrogen cycles and catalysis!!
    Offline

    0
    ReputationRep:
    what did people put for that fuse question?
    Offline

    9
    ReputationRep:
    (Original post by brendan.)
    Here's what I put. I don't know if I'm right, so please correct me if I'm wrong.


    I didn't know if this was a trick question trying to catch people out..
    In the end I put Sulfur for being both oxidised and reduced, because the oxidation state went from 0 to +4 and -2?

    I put it below.. because it 'warmed the solution' so exothermic?


    I didn't get this question either. Because in my head there were two ways. The one you stated and then the other, by going to a diol, then using acidified potassium dichromate.

    As I said, this is what I put, but I could be wrong..
    Well i said the first part about it being oxidised from 0 to +4 so i'll pray for 2 marks then. And I put it below Well if the method I used works then I hope they're fair and give me some marks for it. I thought they were looking for something to do with an alcohol but I couldn't for life of me remember it so i opted for the other
    Offline

    0
    ReputationRep:
    Am I allowed to say that that is the best Chemistry paper I've ever sat? Lots of maths + lots of 1 markers = very good paper for me. Sorry if you found it hard, hope I'm not deluded!

    Paper anyone?

    Edit: Who negged me for just saying what I thought? I have found exams hard in the past you know...
    Seriously, if you're just negging people to take out your frustration that you failed the exam, then get over yourself.
    Offline

    1
    ReputationRep:
    (Original post by parallal)
    For the question about why a benzene ring can't go through addition but it can go through substitution. I put that adding/taking away electrons will disrupt the delocalised system and make the benzene less stable. Is that right/sorta right?
    Yep, thats what I wrote about anyway, that with substitution the delocalised structure remains intact and the electrons at a lower energy, whereas addition reaction disrupts the system and so the electrons are not a such a low energy, so it's not a favourable reaction.
    Offline

    0
    ReputationRep:
    (Original post by Jake200493)
    Omg- loved it! All the stuff I could do and no evil nitrogen cycles and catalysis!!
    could you be more of a ****?
    Offline

    0
    ReputationRep:
    (Original post by feelbetter)
    what did people put for that fuse question?
    That was hard. I kinda put that it was unnecessary because high entropy = likely that reaction will happen spontaneously, but then said that it was a good thing because you could fix when the reaction would start, and stand clear since it was very exothermic. In other words, I had no clue, so waffled
    Offline

    1
    ReputationRep:
    Tough paper
    Offline

    0
    ReputationRep:
    (Original post by feelbetter)
    what did people put for that fuse question?
    That was hard. I put that because the S(total) of the reaction is very high it would need a lot of energy to kick start the reaction. And the fuse would provide a high enough enery/temperature. And then I waffled a bit.

    That's wrong but oh well.
    Offline

    0
    ReputationRep:
    (Original post by Kooper)
    That was hard. I kinda put that it was unnecessary because high entropy = likely that reaction will happen spontaneously, but then said that it was a good thing because you could fix when the reaction would start, and stand clear since it was very exothermic. In other words, I had no clue, so waffled

    Yeah, it seemed weird as entropy was really high, I said something similar.
    Offline

    0
    ReputationRep:
    Okish paper, some hard bits but then again some really easy bits I thought. What was the answer to the Ssys question, was it positive or neagtive?
    Offline

    0
    ReputationRep:
    (Original post by parallal)
    That was hard. I put that because the S(total) of the reaction is very high it would need a lot of energy to kick start the reaction. And the fuse would provide a high enough enery/temperature. And then I waffled a bit.

    That's probably wrong but oh well.
    Yeah similar to what i put.
    Offline

    0
    ReputationRep:
    (Original post by parallal)
    That was hard. I put that because the S(total) of the reaction is very high it would need a lot of energy to kick start the reaction. And the fuse would provide a high enough enery/temperature. And then I waffled a bit.

    That's wrong but oh well.
    I said something along these lines..

    Real tough paper.
    Offline

    12
    ReputationRep:
    D:
    Aahhhh! I thought I was ready...
    I'm not.
    Offline

    0
    ReputationRep:
    You know for the S(total) question I think I forgot to put a sign in front of my answer....
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: December 10, 2011
The home of Results and Clearing

2,556

people online now

1,567,000

students helped last year

University open days

  1. SAE Institute
    Animation, Audio, Film, Games, Music, Business, Web Further education
    Thu, 16 Aug '18
  2. Bournemouth University
    Clearing Open Day Undergraduate
    Fri, 17 Aug '18
  3. University of Bolton
    Undergraduate Open Day Undergraduate
    Fri, 17 Aug '18
Poll
Do you want your parents to be with you when you collect your A-level results?

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.