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Names | |
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IUPAC name
Hydrogencarbonate
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Systematic IUPAC name
Hydroxidodioxidocarbonate(1−)[1] | |
Other names
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Identifiers | |
3D model (JSmol)
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3DMet | |
3903504 | |
ChEBI | |
ChEMBL | |
ChemSpider | |
49249 | |
KEGG | |
PubChem CID
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UNII | |
CompTox Dashboard (EPA)
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Properties | |
HCO− 3 | |
Molar mass | 61.0168 g mol−1 |
log P | −0.82 |
Acidity (pKa) | 10.3 |
Basicity (pKb) | 7.7 |
Conjugate acid | Carbonic acid |
Conjugate base | Carbonate |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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In inorganic chemistry, bicarbonate (IUPAC-recommended nomenclature: hydrogencarbonate[2]) is an intermediate form in the deprotonation of carbonic acid. It is a polyatomic anion with the chemical formula HCO−
3.
Bicarbonate serves a crucial biochemical role in the physiological pH buffering system.[3]
The term "bicarbonate" was coined in 1814 by the English chemist William Hyde Wollaston.[4][5] The name lives on as a trivial name.