Precipitation of Ferricyanide(III) with silver nitrate
silver nitrate solution, diluted
- One adds a small spatula-tipful of potassium hexacyanoferrate(III) into a test tube and then approx. 1 ml of distilled water. A yellow solution results.
- Add some drops of silver nitrate. A red-orange deposit is precipitated.
The solution is disposed of as silver waste, if this is not available, then as heavy metal waste.
Silver hexacyanoferrate(III) is formed, which like many silver salts is insoluble and therefore precipitates.
Clear solution of potassium hexacyanoferrate(III)
Addition of silver nitrate solution causes orange turbidity
Derived from III.13 "Hexacyanoferrat-(III)-nachweis als Ag3[Fe(CN)6]",