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Bicarbonate
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| Names | |
|---|---|
| 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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| 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.
- ^ a b "hydrogencarbonate (CHEBI:17544)". Chemical Entities of Biological Interest (ChEBI). UK: European Institute of Bioinformatics. IUPAC Names. Archived from the original on 7 June 2015.
- ^ Nomenclature of Inorganic Chemistry IUPAC Recommendations 2005 (PDF), IUPAC, p. 137
- ^ "Clinical correlates of pH levels: bicarbonate as a buffer". Biology.arizona.edu. October 2006. Archived from the original on 31 May 2015.
- ^ William Hyde Wollaston (1814) "A synoptic scale of chemical equivalents", Philosophical Transactions of the Royal Society, 104: 1-22. On page 11, Wollaston coins the term "bicarbonate": "The next question that occurs relates to the composition of this crystallized carbonate of potash, which I am induced to call bi-carbonate of potash, for the purpose of marking more decidedly the distinction between this salt and that which is commonly called a subcarbonate, and in order to refer at once to the double dose of carbonic acid contained in it."
- ^ "Baking Soda". Newton – Ask a Scientist. Argonne National Laboratory. Archived from the original on 26 February 2015. Retrieved 2 May 2018.
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