Interaction | Reaction | Process     Data Page

When excess dilute hydroxide is added to a solution of blue hexaaquacoper(II) ion, the complex cation acts as a Brønsted acid and loses two protons giving a precipitate of blue tetraaquadihydroxycopper(II) and two waters. The additional hydroxides are not used.

[Cu(H2O)6]2+

  +  
6
NaOH(aq)
         

Cu(H2O)4(OH)2
Cu(OH)2

  +  
2
H2O
  +  
2
Na+
  +  
4
NaOH(aq)
Reactant Page Go To Go To
Hexaaquacopper(II) ion     Reactions Using    Reactions Forming
Sodium hydroxide solution     Reactions Using    Reactions Forming
Tetraaquadihydroxycopper(II)     Reactions Using    Reactions Forming
Water     Reactions Using    Reactions Forming
Sodium ion     Reactions Using    Reactions Forming
Sodium hydroxide solution     Reactions Using    Reactions Forming

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

© Mark R. Leach 1999 –


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