硫化銀(I)のソースを表示

{{Chembox
|   ImageFileL1 = Silver-sulfide-xtal-3D-SF.png
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|   ImageFileR1 = Argentit 1.jpg
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|   IUPACName = silver(I) sulfide
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|   CASNo = 21548-73-2
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|   Formula = Ag<sub>2</sub>S
|   MolarMass = 247.8 g/mol
|   Appearance = 黒色の固体
|   Density =7.33[[グラム毎立方センチメートル|g/cm<sup>3</sup>]]
|   MeltingPt = 1098 K（825 {{℃}}）
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|   DeltaHf = -32.6 kJ/mol
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|   Entropy = 144.0 J/mol·K
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'''硫化銀(I)'''（りゅうかぎん いち、{{lang-en-short|silver(I) sulfide}}）は、[[化学式]]が Ag<sub>2</sub>S と表される[[銀]]の[[硫化物]]である。黒色の固体で、天然では[[輝銀鉱]]として産出する。俗に言う銀の錆とはこの物質である。

== 合成 ==
[[銀]]を放置すると黒変するのは、空気中の[[硫化水素]]と反応し、硫化銀(I)が生じるからである。
: <chem>H2S\ + 2Ag -> Ag2S\ + H2</chem>

また、[[硫黄]]の蒸気に銀を接触させると硫化銀(I)が生じる。
: <chem>2Ag\ + S -> Ag2S</chem>

== 利用 ==
[[陶器]]の着色などに用いる。

== 外部リンク ==
* [http://www.saltlakemetals.com/Silver_Sulfide.htm Silver Sulfide]

{{銀の化合物}}
{{Chem-stub}}
{{Normdaten}}
{{DEFAULTSORT:りゆうかきんいち}}
[[Category:硫化物]]
[[Category:銀の化合物]]