Interaction | Reaction | Process     Data Page

When EDTA 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+
  +  
         
[Co(EDTA)]3–
  +  
6
H2O
Reactant Page Go To Go To
Hexaaquacobolt(II) ion     Reactions Using    Reactions Forming
Ethylenediaminetetraacetic acid tetraanion     Reactions Using    Reactions Forming
Cobalt(II) EDTA complex ion     Reactions Using    Reactions Forming
Water     Reactions Using    Reactions Forming

Interaction, Reaction, Process defined as:
British A-Level Chemistry: A2
Complexation or Coupling
Type 23 Lewis Acid/Base Complexation Chemistry

© Mark R. Leach 1999 –

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