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

silver mirror experiment Demonstrating the Tollens' test a solution of silver nitrate which can react with aldehydes or reducing sugars to form silver. The silver deposit forms a mirror-like coating on the inside of the reaction vessel. | ChemClub