K4[Fe(CN)6] + 2CuSO4 -> Cu2[Fe(CN)6]↓ — Redox Reactions and Volumetric Analysis Chemistry Question

💡 Solution & Explanation

Step 1: Identify the solubilities of the starting materials. Potassium ferrocyanide and copper(II) sulfate are highly soluble in water. Step 2: Analyze the reaction. Soluble copper(II) sulfate reacts with soluble potassium ferrocyanide to form an insoluble chocolate-brown precipitate of copper ferrocyanide, Cu2[Fe(CN)6]↓. Step 3: Since mixing two soluble compounds results in the formation of a solid precipitate, this is classified as a precipitate formation reaction (type A). Thus, the correct option is (a).