Interaction | Reaction | Process     Data Page

When excess ammonia solution is added to a solution of pink hexaaquacobalt(II) ion, ligand substitution takes place giving a pale brown (or straw coloured) solution of hexaamminocobalt(II) ion. (Only two moles of ammonia are used.)

On standing in air the pale brown solution darkens.

[Co(H2O)6]2+
  +  
6
NH3(aq)
         

[Co(NH3)6]2+
  +  
6
H2O
Reactant Page Go To Go To
Hexaaquacobolt(II) ion     Reactions Using    Reactions Forming
Ammonia, aqueous     Reactions Using    Reactions Forming
Hexaamminocobalt(II) ion     Reactions Using    Reactions Forming
Water     Reactions Using    Reactions Forming

Interaction, Reaction, Process defined as:
British A-Level Chemistry: A2
Ligand Exchange (Inorganic)

© Mark R. Leach 1999 –

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