Chemical compound
Potassium sulfite is the inorganic compound with the formula K2SO3. It is the salt of potassium cation and sulfite anion. It is a white solid that is highly soluble in water. Potassium sulfite is used for preserving food and beverages.[2]
Production and reactions
Potassium sulfite is produced by the thermal decomposition of potassium metabisulfite at 190 °C:[3]
- K2S2O5 → K2SO3 + SO2
Structure
The structure of solid K2SO3, as assessed by X-ray crystallography. The S-O distances are 1.515 Å, and the O-S-O angles are 105.2°[1]
References
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H, (pseudo)halogens | |
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chalcogens | |
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pnictogens | |
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B, C group | |
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transition metals | |
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organic | |
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