Acidic ferric chloride solution on treatment with excess of potassium ferrocyanide gives a Prussian blue coloured colloidal species. It is:

Question

Canvas Classes · Accepted Answer

Strategy:
 Distinguish the products formed during the reaction of  and ferrocyanide based on stoichiometric ratios.

Step 1: Reaction details
When  (ferric ion) reacts with  (ferrocyanide), Prussian blue is formed.
However, the specific composition depends on the ratios.
- If stoichiometric, the insoluble  forms.
- If treated with excess potassium ferrocyanide, it forms a "soluble" colloidal variation known as Potassium iron(III) hexacyanoferrate(II).
Formula: .

More questions from Coordination Compounds