Compounds of Silver:

(1) Silver oxide (Ag₂O): It is unstable and decomposes into Ag and O₂ on slow heating.

(2) Silver halides (AgF, AgCl, AgBr and Agl) : Only AgF is soluble in H₂O. AgCl is insoluble in H₂O but dissolves in NH₄OH, Na₂S₂O₃ and KCN solutions. AgBr is partly soluble whereas AgI is completely insoluble in NH₄OH. Except AgF, all the remaining three silver halides are photosensitive.

(3) Silver nitrate (AgNO₃) : Silver nitrate (AgNO₃) is called lunar caustic silver nitrate on heating above its melting point (485 K) decomposes to silver nitrite but on heating to red heat gives silver.

When treated with alkali, AgNO₃ forms silver oxide which in case of NH₄OH dissolves to form complex ion.

AgNO₃ reacts with iodine in two ways

In contact with organic matter (skin, cloth, paper etc.) AgNO₃ is reduced to metallic silver (black)

oxidises organic matter

AgNO₃ gives different coloured ppt. with different anions like    etc.

AgNO₃ can be used in preparation of the ink and hair dyes.

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