Silver can be separated from lead by : — Metallurgy and Isolation of Elements Chemistry Question

💡 Solution & Explanation

Step 1: Silver is often found as an impurity in lead ores (argentiferous lead). Step 2: In Parkes' process, zinc is added to the molten lead-silver mixture. Zinc and lead are largely immiscible, but silver is about 300 times more soluble in zinc than in lead. Step 3: Upon cooling, a zinc-silver alloy crust forms on the surface and can be easily skimmed off, effectively separating silver from lead. Thus, option (d) is the correct answer.