Consider the following reactions : X(aq.) -K4[Fe(CN)6]-> Chocolate brown ppt. X(aq.) -AgNO3-> White — Redox Reactions and Volumetric Analysis Chemistry Question

💡 Solution & Explanation

Step 1: Both calcium chloride, CaCl2, and sodium oxalate, Na2C2O4, are soluble salts that dissolve in water to give a clear solution. Step 2: When mixed, calcium ions and oxalate ions combine to form highly insoluble calcium oxalate, CaC2O4↓, which precipitates out of the solution. Step 3: This represents a classic precipitate formation reaction (type A), matching option (a).