The ion HSO3- is called hydrogen sulfite or bisulfite.
Understanding HSO3-
The HSO3- ion is a common polyatomic ion with a single negative charge. It is derived from sulfurous acid (H2SO3) by the removal of one hydrogen ion (H+).
Chemical Properties:
- Hydrogen Sulfite or Bisulfite: HSO3- is commonly referred to as either the hydrogen sulfite ion or the bisulfite ion. Both names are correct and refer to the same chemical species.
- Formation: It forms when sulfurous acid (H2SO3) loses one proton (H+).
- Charge: It carries a negative charge (-1).
Chemical Structure:
HSO3- features a sulfur atom at the center, bonded to two oxygen atoms and one hydrogen atom. The negative charge is delocalized over the oxygen atoms.
Common Uses:
- Preservative: HSO3- salts are used as preservatives in food and beverages.
- Reducing Agent: It can act as a reducing agent in various chemical reactions.
- Paper Production: Bisulfite solutions are used in paper pulping processes.
Table Summary
| Name | Formula | Charge | Description |
|---|---|---|---|
| Hydrogen Sulfite | HSO3- | -1 | The ion derived from sulfurous acid with one hydrogen. |
| Bisulfite | HSO3- | -1 | The commonly used alternative name for hydrogen sulfite. |
