F325 transition metals!

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

    0
    ReputationRep:
    I'm revising for my A2 summer exam for OCR chemistry (F325) and i'm looking at the variable oxidation states for transition metals... I remember my teachers saying we don't need to know all of the colour changes. I think they said we need to know the Vanadium ones, but I can't remember the others?

    Does anyone have any ideas which ones we need to know?

    Thank you!
    Offline

    0
    ReputationRep:
    Hexaaqua Copper (II) ion [Cu(H2O)6]2+(aq) is blue.

    Tetraamine diaqua Copper (II) ion [Cu(NH4)4(H2O)2]2+(aq) is deep blue.

    Tetrachlorocuprate ion [CuCl4]2-(aq) is yellow (formed by reacting Hexaaqua Copper (II) ions with conc. HCl, it's an equilibrium rxn so it changes colour from blue to green to yellow.)

    Hexaaqua Cobalt (II) ion [CO(H2O)6]2+(aq) is pink.

    Tetrachlorocobaltate ion [CoCl4]2-(aq) is blue.

    I don't think you need to know the colours of any other TM ions.
    • Thread Starter
    Offline

    0
    ReputationRep:
    (Original post by Cottrill)
    Hexaaqua Copper (II) ion [Cu(H2O)6]2+(aq) is blue.

    Tetraamine diaqua Copper (II) ion [Cu(NH4)4(H2O)2]2+(aq) is deep blue.

    Tetrachlorocuprate ion [CuCl4]2-(aq) is yellow (formed by reacting Hexaaqua Copper (II) ions with conc. HCl, it's an equilibrium rxn so it changes colour from blue to green to yellow.)

    Hexaaqua Cobalt (II) ion [CO(H2O)6]2+(aq) is pink.

    Tetrachlorocobaltate ion [CoCl4]2-(aq) is blue.

    I don't think you need to know the colours of any other TM ions.
    Thank you
    Offline

    2
    ReputationRep:
    Just to add, take a look at the syllabus when you are unsure of this kind of thing as it will tell you on there.
 
 
 
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: April 4, 2012
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
Would you rather have...?
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.