Potassium selenate
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ECHA InfoCard | 100.029.286 |
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InChI
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Properties | |
Chemical formula | K 2SeO 4 |
Molar mass | 221.2 g/mol[1] |
Appearance | colorless crystals hygroscopic |
Odor | odorless |
Density | 3.07 g/cm3[2] |
Solubility in water | 1.07 g/ml (0 °C) 1.11 g/ml (20 °C) 1.22 g/ml (100 °C) |
Refractive index (nD) | 1.539 |
Structure | |
Crystal structure | orthorhombic |
Hazards | |
NFPA 704 (fire diamond) | 3 1 0 |
Related compounds | |
Other anions | Potassium sulfate |
Other cations | Sodium selenate |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references |
Chemical compound
Potassium selenate, K
2SeO
4, is an odorless, white solid that forms as the potassium salt of selenic acid.
Preparation
Potassium selenate is produced by the reaction of selenium trioxide and potassium hydroxide.
- SeO3 + 2 KOH → K2SeO4 + H2O
Alternatively, it can be made by treating selenous acid with potassium hydroxide, followed by oxidation of the resulting potassium selenite with bromine water.[3]
- H2SeO3 + 2 KOH → K2SeO3 + 2 H2O
- K2SeO3 + 2 KOH + Br2 → K2SeO4 + 2 KBr + H2O
Uses
Potassium selenate can be used to produce selenium trioxide.[4] It can also use to treat selenium deficiency in livestock.[5]
References
- ^ "Potassium Selenate K2SeO4 Molecular Weight". EndMemo. Retrieved 2019-09-03.
- ^ "Potassium Selenate". American Elements. Retrieved 2019-09-03.
- ^ Rosenfeld, Irene; Beath, Orville A. (2013). Selenium: Geobotany, Biochemistry, Toxicity, and Nutrition. Elsevier Science. p. 305. ISBN 978-1-4832-7590-1.
- ^ Sicius, Hermann (2015). Chalkogene : elemente der sechsten hauptgruppe (in German). Springer. p. 28. ISBN 978-3-658-10522-8. OCLC 919684689.
- ^ Wolfgang Löscher, Angelika Richter, Heidrun Potschka (2014). Pharmakotherapie bei Haus- und Nutztieren (in German). Stuttgart: Enke. ISBN 978-3-8304-1250-2. OCLC 891036290.
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- K3N
- KNH2
- KN3
- KNO2
- KNO3
- K3P
- KH2PO3
- K3PO4
- K2HPO4
- KH2PO4
- KPF6
- KAsO2
- K3AsO4
- K2HAsO4
- KH2AsO4
- B4K2O7
- K2CO3
- KHCO3
- K2SiO3
- K2SiF6
- K2Al2O4
- K2Al2B2O7
- K2PtCl4
- K2Pt(CN)4
- K2TiF6
- K2PtCl6
- K2ReCl6
- K
2ReF
6 - KAsF6
- K2ReBr6
- K
2ReI
6 - K2ZrF6
- K4Fe(CN)6
- K3Fe(CN)6
- K3Fe(C2O4)3
- K2FeO4
- K2MnO4
- KMnO4
- K3CrO4
- K2CrO4
- K3CrO8
- KCrO3Cl
- K2Cr2O7
- K2Cr3O10
- K2Cr4O13
- K4Mo2Cl8
- KHCO2
- KCH3CO2
- KCF3CO2
- K2C2O4
- KHC2O4
- KC12H23O2
- KC18H35O2
- C3H2K2O4
- C4H6KO4
- C5H7KO4