Interaction | Reaction | Process     Data Page

When sodium oxalate is added to a solution of aqueous cobalt(II) ion, the more stable chelate complex forms.

Chelate reactions are entropy driven: entropy change is positive due to the larger number of species of the right hand side of the equation.

[Co(H2O)6]2+
  +  
3
[C2O4]2–
         
[Co(C2O4)3]4–
  +  
6
H2O
Reactant Page Go To Go To
Hexaaquacobolt(II) ion     Reactions Using    Reactions Forming
Oxalate dianion     Reactions Using    Reactions Forming
Cobalt(II) tris(ethanedioate) complex ion     Reactions Using    Reactions Forming
Water     Reactions Using    Reactions Forming

Interaction, Reaction, Process defined as:
British A-Level Chemistry: A2

© Mark R. Leach 1999 –

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