System to describe the chemical formulas for WEB.

Sulfurous acid

Find chemicals by name or formulas.
This reference contains the names of substances and descriptions of the chemical formulas (including the structural formula and the skeletal formula).
Type the part of name or the formula of substance for search:
Languages: | | | Apply to found

Sulfurous acid

Molecular formula: H2O3S CAS# 7782-99-2
Categories: Inorganic acids
PubChem CID: 1100
Names
English:
Acide sulfureux
Sulfur dioxide solution
Sulfurous acid(IUPAC)(CAS)
acido sulfuroso

Variants of the formula:

H2SO3
H(+1)2S(+4)O(-2)3
HO-S`|O|-OH
O//S<_(A75)OH>_(A15)OH
H/O\S|O`|/O\H
Elemental composition
Can't show the diagram.
Symbol Element Atomic weight Number of atoms Mass percent

Reactions in which Sulfurous acid is involved

  • Na2SO3 + H2SO4 -> Na2SO4 + H2SO3
  • H2SO3 -> H2O + SO2"|^"
  • SO2 + H2O <=> H2SO3
  • {M}(OH)2 + H2{X} = {M}{X} + 2H2O , where M = Mg Ca Ba Sr Cu Zn; X = SO4 SO3 CO3
  • H2{X} + 2{M}OH = {M}2{X} + 2H2O , where X = SO4 SO3; M = Li Na K Rb