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Homework Help: [Co(H2O)6]2+ + 4NH4SCN

  1. May 7, 2007 #1
    Hi

    When we did this reaction in lab the result was a blue solution with a white precipitate. I think that the Cobalt will be more likely to form a complex with SCN than NH4 as they are both intermediate donors/acceptors.

    If thats the case, then is correct that the white precippitate formed is just NH4 ?

    Thank you:smile:
     
  2. jcsd
  3. May 8, 2007 #2

    Borek

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    Staff: Mentor

    What is NH4?
     
  4. May 8, 2007 #3
    NH4 is really [NH4]+ a cation.....! So the compound formed is [Co(NCS)4]2-

    Does the ammonium remain as 4[NH4]+ on the right hand side of the reaction? I cant see what could be the precipitate....
     
  5. May 9, 2007 #4

    Borek

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    Staff: Mentor

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