Persulfate

{{Short description|Class of chemical compounds}} A '''persulfate''' (sometimes known as peroxysulfate or peroxodisulfate)<ref>{{Cite journal|last1=Shafiee|first1=Saiful Arifin|last2=Aarons|first2=Jolyon|last3=Hamzah|first3=Hairul Hisham|year=2018|title=Electroreduction of Peroxodisulfate: A Review of a Complicated Reaction|url=http://m.jes.ecsdl.org/content/165/13/H785.abstract?sid=3ddef67b-7f3b-49fa-93a7-c6eee812bfe4|journal=Journal of the Electrochemical Society|volume=165|issue=13|pages=H785–H798|doi=10.1149/2.1161811jes|s2cid=106396614 |doi-access=free}}</ref> is a compound containing the anions {{chem|SO|5|2−}} or {{chem|S|2|O|8|2−}}.<ref name = Ullmann>{{Ullmann | title = Peroxo Compounds, Inorganic | author = Harald Jakob, Stefan Leininger, Thomas Lehmann, Sylvia Jacobi, Sven Gutewort | doi = 10.1002/14356007.a19_177.pub2}}</ref> The anion {{chem|SO|5|2−}} contains one peroxide group per sulfur center, whereas in {{chem|S|2|O|8|2−}}, the peroxide group bridges the sulfur atoms. In both cases, sulfur adopts the normal tetrahedral geometry typical for the S(VI) oxidation state. These salts are strong oxidizers.<ref>{{cite web|url=http://geocleanse.com/persulfate.asp |title=Geo-Cleanse International |publisher=Geocleanse.com |access-date=2012-06-13}}</ref><ref>{{cite journal|author = Wacławek, S., Lutze, H. V., Grübel, K., Padil, V.V.T., Černík, M., Dionysiou, D.D. (2017) |title=Chemistry of persulfates in water and wastewater treatment: A review. |journal = Chemical Engineering Journal |volume = 330 |pages = 44–62 |doi = 10.1016/j.cej.2017.07.132|date = 2017-12-15 }}</ref>

==Ions== * Peroxomonosulfate ion, {{chem|SO|5|2−}} * Peroxydisulfate {{chem|S|2|O|8|2−}}

==Acids== * Peroxymonosulfuric acid (Caro's acid), H₂SO₅ * Peroxydisulfuric acid, H₂S₂O₈

==Example salts== * Sodium peroxomonosulfate, Na₂SO₅ * Potassium peroxymonosulfate, KHSO₅ * Sodium persulfate (sodium peroxydisulfate), Na₂S₂O₈ * Ammonium persulfate (ammonium peroxydisulfate), (NH₄)₂S₂O₈ * Potassium persulfate (potassium peroxydisulfate), K₂S₂O₈ * Oxone is a triple salt {{chem2|2KHSO5*KHSO4*K2SO4}}

== References == {{reflist}}

{{Persulfates}}

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Category:Persulfates Category:Sulfur oxyanions Category:Preservatives

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