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The Best about Silver Nitrate

Silver Nitrate is an organic compound with chemical formula AgNO3. This compound is a versatile precursor to many other silver compounds. It is far less sensitive to light than the halides. It was once called lunar caustic because silver was called Luna by the ancient alchemist, who believed that silver was associated with the moon.

Albertus Magnus, in the 13th century, documented the ability of nitric acid to separate gold and silver by dissolving the silver. Magnus noted that the resulting solution of silver nitrate could blacken skin. Its common name at the time was nitric acid silver. Silver Nitrate can be prepared by reacting silver, such as silver bullion or silver foil, with nitric acid, resulting in silver nitrate, water and oxides of nitrogen. Reaction by products depend upon the concentration of nitric acid used.

A typical reaction with silver nitrate is to suspend a rod of copper in a solution of silver nitrate and leave it for few hours. The silver nitrate reacts with copper to form hairlike crystals of silver metal and a blue solution of copper nitrate. Most metal nitrates thermally decompose to the respective oxides, but silver oxide decomposes at a lower temperature than silver nitrate, so the decomposition of silver nitrate yields elemental silver instead.

Silver salts have antiseptic properties. Until the development and wide spread adoption of antibiotics, dilute solutions of AgNO3 used to be dropped into newborn babies eyes at birth to prevent contraction of gonorrhea from the mother. Dentists sometimes use silver nitrate infused swabs to heal oral ulcers.

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