Selenous acid: Difference between revisions
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| Name = Selenous acid |
| Name = Selenous acid |
Revision as of 11:14, 22 September 2023
Names | |
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IUPAC names
Selenous acid
Selenic(IV) acid | |
Other names
Selenious acid
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Identifiers | |
3D model (JSmol)
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ChEBI | |
ChemSpider | |
ECHA InfoCard | 100.029.067 |
KEGG | |
PubChem CID
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UNII | |
CompTox Dashboard (EPA)
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Properties | |
H2SeO3 | |
Molar mass | 128.97 g/mol |
Appearance | white hygroscopic crystals |
Density | 3.0 g/cm3 |
Melting point | decomposes at 70°C |
very soluble | |
Solubility | soluble in ethanol |
Acidity (pKa) | 2.46, 7.3[2] |
Conjugate base | Hydrogenselenite |
−45.4·10−6 cm3/mol | |
Related compounds | |
Other anions | {{{value}}} |
Other cations | {{{value}}} |
Related compounds | {{{value}}} |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
verify (what is ?) | |
Infobox references | |
Selenous acid, also known as selenious acid, is a chemical compound. Its chemical formula is H2SeO3. It is an acid. It contains hydrogen and selenite ions.
Properties
Selenous acid is a weak acid. It can be heated to make selenium dioxide. It is more stable than sulfurous acid. It can be crystallized as a white solid. It is a weak oxidizing agent. It reacts with bases to make selenites.
Preparation
It is made by dissolving selenium dioxide in water.
Uses
It is used to dye steel a blue-grey color. It is used in the making of organic compounds.
Safety
Selenous acid is very toxic. Just ingesting a small amount can kill you.
Related pages
Sources
- ↑ Lide, David R. (1998). Handbook of Chemistry and Physics (87 ed.). Boca Raton, Florida: CRC Press. pp. 4–81. ISBN 0-8493-0594-2.
- ↑ Ka and pKa for Polyprotic Acids. ucdsb.on.ca