Turn on thread page Beta
    Offline

    5
    ReputationRep:
    (Original post by Don Pedro K.)
    Yeah it was 4.02. I got that wrong lol.
    I got 4.03 damn it


    Posted from TSR Mobile
    Offline

    13
    ReputationRep:
    (Original post by Don Pedro K.)
    I put that if you had too much phenol you wouldn't be able to measure initial rate or something like that.
    exactly cause it would react with the bromine
    Offline

    2
    ReputationRep:
    (Original post by Funky_Giraffe)
    What did you guys put for why you only use a relatively small amount of phenol?
    I think it was due to the fact that you wanted the INITIAL RATE so that's when t=0. If you had a large amount of phenol you would not see a colour change quickly so it wouldn't be the initial rate? Something along those lines is what I put
    Offline

    9
    ReputationRep:
    (Original post by Supermanxxxxxx)
    I got 4.03 damn it


    Posted from TSR Mobile
    Oh wait sorry it was 4.03 haha
    Offline

    7
    ReputationRep:
    Diprotic titration cuve question was hard, rest of the paper was OK though.

    With the NMR spectra question, I drew the right peaks (TMS reference, singlet, triplet and quartet) but I swapped the position of one of the peaks. How many marks do you think I'd lose?
    Offline

    1
    ReputationRep:
    (Original post by jess.olo)
    I think I got 4.03 or something like that !!
    yeah me too
    Offline

    1
    ReputationRep:
    (Original post by krishanj)
    For the pH of the acid using Ka1?
    Yeah
    Offline

    9
    ReputationRep:
    I definitely found this paper harder than any of the past papers :/
    Offline

    14
    ReputationRep:
    (Original post by scrlk)
    Diprotic titration cuve question was hard, rest of the paper was OK though.

    With the NMR spectra question, I drew the right peaks (TMS reference, singlet, triplet and quartet) but I swapped the position of one of the peaks. How many marks do you think I'd lose?
    I don't think you'll lose any mark for not scaling correctly as long as you state the area ratio
    I didnt draw TMS reference but I don't think it matters does it
    Offline

    13
    ReputationRep:
    (Original post by Supermanxxxxxx)
    I got 4.03 damn it


    Posted from TSR Mobile
    no wait I 4.3 as well why is it wrong?
    Offline

    9
    ReputationRep:
    (Original post by scrlk)
    Diprotic titration cuve question was hard, rest of the paper was OK though.

    With the NMR spectra question, I drew the right peaks (TMS reference, singlet, triplet and quartet) but I swapped the position of one of the peaks. How many marks do you think I'd lose?
    Same. We probably lost 1 mark tbh.
    Offline

    9
    ReputationRep:
    (Original post by Cpj16)
    no wait I 4.3 as well why is it wrong?
    You're not wrong
    Offline

    14
    ReputationRep:
    (Original post by Funky_Giraffe)
    C0balt how do you know when you have an excess ?
    I am not sure. I said no new precipitate appears if you add excess...
    Offline

    7
    ReputationRep:
    (Original post by Don Pedro K.)
    I definitely found this paper harder than any of the past papers :/
    I thought this too! but people are saying it was quite nice! what do you think the grade boundary for A* will be!?
    Offline

    9
    ReputationRep:
    (Original post by C0balt)
    I don't think you'll lose any mark for not scaling correctly as long as you state the area ratio
    I didnt draw TMS reference but I don't think it matters does it
    I didn't draw TMS either. I got the peaks the wrong way round for the quartet and singlet so my area ratio was technically incorrect (but the numbers were correct in relation to my diagram). So I would probably lose one mark right?
    Offline

    1
    ReputationRep:
    (Original post by scrlk)
    Diprotic titration cuve question was hard, rest of the paper was OK though.

    With the NMR spectra question, I drew the right peaks (TMS reference, singlet, triplet and quartet) but I swapped the position of one of the peaks. How many marks do you think I'd lose?
    Which way around did the peaks go? Was it Quartet, Singlet, Triplet?
    Offline

    1
    ReputationRep:
    ****ing hell this is the hardest paper ive ever sat for
    Offline

    14
    ReputationRep:
    (Original post by robinfairy978)
    Which way around did the peaks go? Was it Quartet, Singlet, Triplet?
    Yes
    Offline

    1
    ReputationRep:
    Guys judging from all the people you spoke to how do you think this exam was difficulty wise compared with past years?
    Offline

    2
    ReputationRep:
    For the phenol one would it be enough jist to say that it would take too long to change colour
 
 
 

1,000

students online now

800,000+

Exam discussions

Find your exam discussion here

Poll
Should predicted grades be removed from the uni application process

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.