Interaction | Reaction | Process     Data Page

Orange dichromate(VI) reacts with granulated zinc and aqueous hydrochloric acid to give a mixed ligand complex, the green dichlorotetraaquachromium(III) ion.

Even using sulfuric acid, some substitution of the hexaaquachromium(III) ion occurs and the ruby red (red-violet) of the ionic solid its solutions is not observed.
[Cr2O7]2–
  +  
3
Zn
  +  
14
HCl(aq)
  +  
H2O
         
2
[CrCl2(H2O)4]+
  +  
3
Zn2+
  +  
10
Cl–
Reactant Page Go To Go To
Dichromate(VI) ion     Reactions Using    Reactions Forming
Zinc     Reactions Using    Reactions Forming
Hydrochloric acid, aqueous     Reactions Using    Reactions Forming
Water     Reactions Using    Reactions Forming
Dichlorotetraaquachromium(III) ion     Reactions Using    Reactions Forming
Zinc ion     Reactions Using    Reactions Forming
Chloride ion     Reactions Using    Reactions Forming

Interaction, Reaction, Process defined as:
British A-Level Chemistry: A2
Redox
Reduction: Of Substrate By Reagent

© Mark R. Leach 1999 –

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