Chemistry unit 6 June 2016

Announcements Posted on
How helpful is our apprenticeship zone? Have your say with our short survey 02-12-2016
    Offline

    2
    ReputationRep:
    (Original post by Adorable98)
    I see thnx, do you know how to answer 3 (d)
    Spoiler:
    Show
    what do you know about ecell
    Offline

    3
    (Original post by samb1234)
    what do you know about ecell
    Welll I know you can't measure the standard electrode potential of a metal & its solution directly so the only way you could do that is by measuring the potential differences between the metal and a standard electrode..
    Offline

    2
    ReputationRep:
    (Original post by Adorable98)
    Welll I know you can't measure the standard electrode potential of a metal & its solution directly so the only way you could do that is by measuring the potential differences between the metal and a standard electrode..
    i meant for an overall reaction to occur, what must the ecell be greater than
    Offline

    3
    (Original post by samb1234)
    i meant for an overall reaction to occur, what must the ecell be greater than
    0.4?
    Offline

    2
    ReputationRep:
    (Original post by Adorable98)
    0.4?
    A reaction is in general feasible if ecell is >0. We know that the reduction potentials are for the reducing direction, i.e X+Ae- ----> X^-A. What would it be for a species being oxidised, how would this affect the value given in the data booklet and how can we then use that to answer the question
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by Adorable98)
    What is a GRIGNARD and should we know it?
    We add alkyl halides to carbonyl group in grignard reaction, I'm not sure if we are supposed to know this but I saw this in george facer's book and I don't trust edexcel on what they'll give us!
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by sabahshahed294)
    A question, do we have to know about Vanadium for Unit 6? (Just for confirmation I'm asking)
    Lol yes we gotta know everything! everything in unit 4 and 5 and I suppose 1 and 2 aswell!
    Offline

    2
    ReputationRep:
    Oh how nice! *Sigh*
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by Adorable98)
    I see thnx, do you know how to answer 3 (d)
    Spoiler:
    Show
    I guess it's better to learn this
    VO2^+-----------} VO^+2 (yellow to blue)(reducing agent: H3PO3 or KI+s2O3)
    VO2^+----------} V^+3 (YELLOW TO GREEN) (reducing agent:GRANULATED TIN)
    VO2^+-----------} v^+2 (yellow to purple/mauve)(reducing agent: powdered zinc)
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by sabahshahed294)
    Oh how nice! *Sigh*
    Yea right???
    It's killing me!
    :/
    Offline

    2
    ReputationRep:
    Hahaha it's killing everyone actually.
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by dinithisara)
    Do any of you guys have the George facer Edexcel As / A2 chemistry unit 3 & 6: Chemistry Laboratory Skills in pdf?
    Yea but these seem unimportant!
    Attached Files
  1. File Type: doc Chem - Practicals.doc (572.5 KB, 110 views)
  2. File Type: doc Chemistry - Unit3.doc (283.0 KB, 76 views)
    • Thread Starter
    Offline

    2
    ReputationRep:
    The most important thing for every student taking chem 6 is the user guide! It's a must have!
    Attached Images
  3. File Type: pdf GCE_in_Chemistry_Intrnl_Asst_of_Practical_Skills_User_guide_Issue_Yr12.pdf (451.2 KB, 271 views)
    Offline

    2
    ReputationRep:
    (Original post by Aimen.)
    I guess it's better to learn this
    VO2^+-----------} VO^+2 (yellow to blue)(reducing agent: H3PO3 or KI+s2O3)
    VO2^+----------} V^+3 (YELLOW TO GREEN) (reducing agent:GRANULATED TIN)
    VO2^+-----------} v^+2 (yellow to purple/mauve)(reducing agent: powdered zinc)
    No it isn't. There's no point learning reagents by rote when the information required is in the data book
    Offline

    1
    ReputationRep:
    Thank you so much 😃

    Posted from TSR Mobile
    Offline

    1
    ReputationRep:
    Do we need to know chromatography and redox in detail?

    Also, attached some notes for those who might need
    Attached Images
  4. File Type: pdf A2AS-CHEM--REVISED-Support-5981.pdf (144.4 KB, 371 views)
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by demotivated)
    Do we need to know chromatography and redox in detail?

    Also, attached some notes for those who might need
    I never gave much attention to chromatography and redox but they appeared in exams so yea it's better to revise 'em and THANKS FOR NOTES
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by samb1234)
    No it isn't. There's no point learning reagents by rote when the information required is in the data book
    My teacher says it saves us alot of time and plus they don't give us data booklet in unit 6, they just give us useful pieces in the paper!
    Offline

    2
    ReputationRep:
    Do they give the data booklet for unit 6 exam? i dont think so
    Offline

    2
    ReputationRep:
    Is this the official unit 6 chem thread?
 
 
 
Write a reply… Reply
Submit reply

Register

Thanks for posting! You just need to create an account in order to submit the post
  1. this can't be left blank
    that username has been taken, please choose another Forgotten your password?
  2. this can't be left blank
    this email is already registered. Forgotten your password?
  3. this can't be left blank

    6 characters or longer with both numbers and letters is safer

  4. this can't be left empty
    your full birthday is required
  1. Oops, you need to agree to our Ts&Cs to register
  2. Slide to join now Processing…

Updated: October 15, 2016
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

Today on TSR
Poll
Wake up and smell the...
Useful resources
Study resources

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.