Interaction | Reaction | Process     Data Page

The hexaaquairon(III) complex ion is a weak Brønsted acid and will donate a proton to water. This process is called "hydrolysis" or an "acidity reaction".

Even though the reaction has an equilibrium which lies to the left, the rust brown colour of the pentaaquahydroxyiron(III) complex ion will obscure the pale violet of the hexaaquairon(III) complex ion.

Addition of aqueous acid will move the equilibrium to the left, and aqueous alkali will move to to the right.

[Fe(H2O)6]3+

  +  
H2O
         

[Co(NH3)6]2+

  +  
[H3O]+
Reactant Page Go To Go To
Hexaaquairon(III) ion     Reactions Using    Reactions Forming
Water     Reactions Using    Reactions Forming
Pentaaquahydroxyiron(III) ion     Reactions Using    Reactions Forming
Oxonium ion     Reactions Using    Reactions Forming

Interaction, Reaction, Process defined as:
British A-Level Chemistry: A2
Proton transfer: Brønsted reaction

© Mark R. Leach 1999 –


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