Silver chloride
From Wikipedia, the free encyclopedia
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General 
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| Name | Silver chloride |
| Chemical formula | AgCl |
| Appearance | White solid |
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Physical |
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| Formula weight | 143.321 amu |
| Melting point | 728 K (455 °C) |
| Boiling point | 1823 K (1550 °C) |
| Density | 5.56 × 103 kg/m3 |
| Crystal structure | cubic |
| Solubility | 52 × 10−6g/100g water at 50 °C |
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Thermochemistry |
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| ΔfH0gas | ? kJ/mol |
| ΔfH0liquid | ? kJ/mol |
| ΔfH0solid | −127.01 kJ/mol |
| S0gas, 1 bar | ? J/mol·K |
| S0liquid, 1 bar | ? J/mol·K |
| S0solid | 96.25 J/mol·K |
Silver chloride (also called silver(I) chloride) is a chemical compound with chemical formula AgCl and is composed of one silver and one chlorine ion. Silver chloride is a white crystalline solid, one of the few metal chlorides insoluble in water. It is soluble, however, in solutions containing the halide ions, thiosulfate ions, or aqueous ammonia, reacting to form complexes according to the following reactions:
- AgCl(s) + Cl–(aq) → AgCl2–(aq)
- AgCl(s) + 2S2O32–(aq) → Ag[(S2O3)2]3–(aq) + Cl–(aq)
- AgCl(s) + 2NH3(aq) → Ag[(NH3)2]+(aq) + Cl–
Silver chloride is used to make photographic film since it turns darker when exposed to light.
To detect the presence of chloride in water, silver nitrate is added and silver chloride crystals will form if chloride is present.
[edit] Applications
- Silver Chloride Reference Electrode
- Silver chloride is one of the silver halides used in photographic film and photographic paper manufacturing.
- Silver chloride's low solubility makes it a useful addition to pottery glazes for the production of "Inglaze lustre".
- Silver chloride has the ability to eliminate or flush out mercury from the body.
- Silver chloride is often used in Photochromic Lenses
[edit] Footnotes
<References/>
[edit] External links
fr:Chlorure d'argent it:Cloruro d'argento nl:Zilverchloride sv:Silverklorid zh:氯化银
