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AgCl

Silver chloride
Chlorid stříbrný.PNG
Silver-chloride-3D-ionic.png
Names
IUPAC name
Silver(I) chloride
Other names
cerargyrite
chlorargyrite
horn silver
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.029.121
PubChem CID
RTECS number VW3563000
UNII
Properties
AgCl
Molar mass 143.32 g·mol−1
Appearance White Solid
Density 5.56 g cm−3
Melting point 455 °C (851 °F; 728 K)
Boiling point 1,547 °C (2,817 °F; 1,820 K)
520 μg/100 g at 50 °C
Solubility soluble in NH3, conc. HCl, conc. H2SO4, alkali cyanide, NH4CO3?, KBr, Na2S2O3;

insoluble in alcohol, dilute acids.

−49.0·10−6 cm3/mol
2.071
Structure
halite
Thermochemistry
96 J·mol−1·K−1
−127 kJ·mol−1
Hazards
Safety data sheet Fischer Scientific, Salt Lake Metals
NFPA 704
Flammability code 0: Will not burn. E.g., water Health code 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g., chloroform Reactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g., liquid nitrogen Special hazards (white): no codeNFPA 704 four-colored diamond
Related compounds
Other anions
silver(I) fluoride, silver bromide, silver iodide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N  (what is YesYN ?)
Infobox references

insoluble in alcohol, dilute acids.

Silver chloride is a chemical compound with the chemical formula AgCl. This white crystalline solid is well known for its low solubility in water (this behavior being reminiscent of the chlorides of Tl+ and Pb2+). Upon illumination or heating, silver chloride converts to silver (and chlorine), which is signaled by greyish or purplish coloration to some samples. AgCl occurs naturally as a mineral chlorargyrite.

Silver chloride is easily synthesized by combining aqueous solutions of silver nitrate and sodium chloride.

The solid adopts the fcc NaCl structure, in which each Ag+ ion is surrounded by an octahedron of six chloride ligands. AgF and AgBr crystallize similarly. However, the crystallography depends on the condition of crystallization, primarily free silver ion concentration, as is shown on the pictures left (greyish tint and metallic lustre are due to partly reduced silver). AgCl dissolves in solutions containing ligands such as chloride, cyanide, triphenylphosphine, thiosulfate, thiocyanate and ammonia. Silver chloride reacts with these ligands according to the following illustrative equations:

Silver chloride does not react with nitric acid. Most complexes derived from AgCl are two-, three-, and, in rare cases, four-coordinate, adopting linear, trigonal planar, and tetrahedral coordination geometries, respectively.


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Wikipedia

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