Question

What is Tollen’s reagent? What would you observe on heating Tollen’s reagent with formalin in a test tube?

Answer 1

 Tollen’s reagent is ammoniacal silver nitrate solution. On heating Tollen’s reagent with formalin in a test tube, a shining silver mirror is formed on the inside walls of test tube. Also, formaldehyde is oxidised to form carboxylic acid.

Answer 2

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• Ammonical Silver Nitrate Solution.