hydrogensulfite
Sign in to saveAlso known as bisulfites, hydrogen sulfite
thumb|right|320px|Equilibrium reaction relating the two tautomers of bisulfite. The bisulfite ion (IUPAC-recommended nomenclature: hydrogensulfite) is the ion . Salts containing the ion are also known as "sulfite lyes". Sodium bisulfite is used interchangeably with sodium metabisulfite (Na2S2O5). Sodium metabisulfite dissolves in water to give a solution of Na+. Na2S2O5 + H2O → 2Na[HSO3]
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Article
9 sectionsContents
- Structure
- Reactions
- Tautomerization
- Acid-base reactions
- Dehydration/hydration equilibria
- Redox reactions
- Organic synthesis
- Bisulfite DNA sequencing
- References
thumb|right|320px|Equilibrium reaction relating the two tautomers of bisulfite. The bisulfite ion (IUPAC-recommended nomenclature: hydrogensulfite) is the ion . Salts containing the ion are also known as "sulfite lyes". Sodium bisulfite is used interchangeably with sodium metabisulfite (Na2S2O5). Sodium metabisulfite dissolves in water to give a solution of Na+. Na2S2O5 + H2O → 2Na[HSO3]
==Structure== The bisulfite anion exists in solution as a mixture of two tautomers. One tautomer has the proton attached to one of the three oxygen atoms. In the second tautomer the proton resides on sulfur. The S-protonated tautomer has C3v symmetry. The O-protonated tautomer has only Cs symmetry.