Simple Method for Silver Extraction: • Extracting Silver with Nitric Acid and water 1:1 Start by placing the silver-bearing material (either raw stones or electronic scrap) into nitric acid (HNO₃). • Inside the nitric acid, silver turns into silver nitric forming a silvery-white solution • Adding Hydrochloric Acid When HCl is added to the silver nitrate solution, silver chloride forms, appearing as a white precipitate • Using an Iron Nail to Turn it Gray • Place an iron nail into the white silve
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Tollen’s Test (Silver Mirror) Description: An aldehyde is oxidized by silver (I) to generate a carboxylic acid and silver metal, which coats the surface of the glass vessel. Materials: 0.1 M AgNO3 0.8 M KOH 0.5 M Dextrose Large test tube/rubber stopper Conc. HNO3 Beaker Conc. NH4OH Deionized water Procedure: This demonstration is best performed using a document camera. 1. Clean the test tube to be used by rinsing with concentrated nitric acid and washing well with hot water. 2. Prepare Tollen’s
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