Join TSR now and get all your revision questions answeredSign up now

Chemistry unit 6 June 2016 Watch

    Offline

    1
    ReputationRep:
    What did you guys write for the ammonium disulphate question?
    Offline

    2
    ReputationRep:
    I really do think it was harder than Jan one! Especially under the exam stress. Ugh 😭
    Offline

    0
    ReputationRep:
    (Original post by AvWOW)
    I said Zn(OH)4
    What is that question about?
    Offline

    2
    ReputationRep:
    (Original post by AvWOW)
    I said Zn(OH)4
    It's [Zn (OH)4]^2-
    Offline

    1
    ReputationRep:
    (Original post by anonymousawesome)
    What did you guys write for the ammonium disulphate question?
    I wrote that it'll result in less of equilibrium mixture, so less of NaOH needed idk I forgot but something along those lines. Could be wrong - I wrote it last minute
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by Nimra99)
    I think grade boundaries are going to be low.... Hope for the best
    Lol bruh I hope so. Us waqt I couln't tell cuz dad sath thy lkn na wo kc conc kuch mera ghalat hgya ***** xD
    Offline

    3
    ReputationRep:
    (Original post by Sandy_Vega30)
    It's [Zn (OH)4]^2-
    haha yeah ooops I meant that.
    Oh and with excess ammonia it was Zn(NH3)4 ^2- or Zn(NH3)6^2- ???
    Offline

    3
    ReputationRep:
    (Original post by retrobaht)
    I wrote that it'll result in less of equilibrium mixture, so less of NaOH needed idk I forgot but something along those lines. Could be wrong - I wrote it last minute
    Concentration doesn't affect Kc... only temperature does
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by RizK)
    -pt wire should be salt bridge
    -Vanadium electrode cannot be used
    -H should be in 2mol concentration
    Heyy I wrote electrodes should be completely submerged instead of H being 2M
    Offline

    0
    ReputationRep:
    What is the answer of the Ecell value in Q4?
    Offline

    1
    ReputationRep:
    Zn(OH)4.
    Offline

    2
    ReputationRep:
    It was so hard!:unimpressed:

    Posted from TSR Mobile
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by Angelina johnson)
    What was the Kc value ?
    I got 7.32 but most in my class got the right one xD
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by sonam_28)
    What were the burette and pipetter answers? Does the volume change?
    And was zinc Zn(OH)6 or Zn(OH)4???
    I wrote Zn(OH)6 but I guess it doesn't matter!
    Offline

    3
    ReputationRep:
    I think it does not matter whether is znoh4 or znoh6 except the case that is copper ion which always has a corrdination number of 4.
    • Welcome Squad
    Offline

    3
    ReputationRep:
    (Original post by Aimen.)
    Heyy I wrote electrodes should be completely submerged instead of H being 2M
    I thought its H 2m because in the earlier part the half equation said 2H+.. im not sure though. I could be wrong
    • Welcome Squad
    Offline

    3
    ReputationRep:
    (Original post by kingsleylam)
    What is the answer of the Ecell value in Q4?
    Step 1 +0.83 step 2 +0.17
    Offline

    2
    ReputationRep:
    Could no. Of paeks in low res nmr be used todistinguish P, Q and R? What are your answers guys?
    Offline

    1
    ReputationRep:
    i think someone should start a petition
    Offline

    3
    ReputationRep:
    (Original post by Quirky01)
    Could no. Of paeks in low res nmr be used todistinguish P, Q and R? What are your answers guys?
    I wrote Yes, because they have different no. Of peaks...then I stated the no. of peaks for each isomer.
 
 
 
Poll
Is GoT overrated?

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

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