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  Properties of Silver Nitrate

Properties of Silver Nitrate:

Physical:

1. This is soluble in water.

2. Its aqueous solution might decompose on the exposure to light.

Chemical Properties:

1. Action of Heat:

On heating AgNO3, it decomposes in two phases:

2. With NaCl:

AgNO3 provides white precipitate of AgCl including soluble ionic chlorides.

AgNO3 + NaCl → AgCl↓ + NaNO3

3. Silver nitrate is too strongly caustic and oxidizing in nature.

4. With KBr & KI:

AgNO3 provides pale yellow precipitate of AgBr with bromides and yellow AgI including iodides.

AgNO3 + KBr → AgBr + KNO3
                          Yellow ppt

AgNO3 + KI → AgI + KNO3
                           Yellow ppt

5. Action with organic compounds:

Ammoniacal silver nitrate (i.e., Tollen’s reagent) is decreased to silver mirror by compounds such as formaldehyde, formic acid, or glucose

2AgNO3 + 2NH4OH → Ag2O + 2NH4NO3 + H2O
Ag2O + HCOOH → 2Ag↓ + H2O + CO2

 

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