Electrolyte solution in electrolytic refining of lead contains : — Metallurgy and Isolation of Elements Chemistry Question

💡 Solution & Explanation

Step 1: Electrolytic refining of lead is performed using the Betts process. Step 2: The electrolyte used in this process must be highly soluble and stable to prevent lead from precipitating as basic salts. Step 3: The standard electrolyte consists of lead fluorosilicate (PbSiF6) and fluorosilicic acid (H2SiF6) with a small amount of gelatin added to ensure a smooth, coherent deposit of lead at the cathode. This corresponds to option (d).