Na₂CO₃ (aq) + 2 SO₂ (aq) + H₂O (l) → 2 NaHSO₃ (aq) + CO₂ (g)

Reactants:

• Na₂CO₃ – Sodium carbonate
  • Other names: Soda ash , Washing soda , Soda crystals ... show moreSodium carbonate (anhydrous) , Na2CO3 , Disodium carbonate , Natriumkarbonat , Carbonic acid sodium salt (1:2) , Anhydrous sodium carbonate , Carbonic acid, disodium salt , Sodium carbonate, anhydrous , Soda-ash , Natrum carbonicum , Sodium carbonate anhydrous , Sodium salt of carbonic acid , Carbonic acid disodium salt show less
  • Appearance: White solid, hygroscopic ; White hygroscopic powder
• SO₂ – Sulfur dioxide
  • Other names: Sulfurous anhydride , Sulphur dioxide , Sulfurous acid anhydride ... show moreSulfurous oxide , Sulfur oxide , Sulphur dioxide , sulfur dioxide , SO2 , R-764 show less
  • Appearance: Colorless gas ; Colourless gas or compressed liquefied gas with pungent odour ; Colorless gas with a characteristic, irritating, pungent odor. [Note: A liquid below 14°F. Shipped as a liquefied compressed gas.]
• H₂O – Water, oxidane
  • Other names: Water (H2O) , Hydrogen hydroxide (HH or HOH) , Hydrogen oxide ... show moreDihydrogen monoxide (DHMO) (systematic name) , Hydrogen monoxide , Dihydrogen oxide , Hydric acid , Hydrohydroxic acid , Hydroxic acid , Hydrol , Μ-oxido dihydrogen , Κ1-hydroxyl hydrogen(0) show less
  • Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas

Products:

• NaHSO₃ – Sodium hydrogen sulfite
  • Other names: Sodium bisulfite , E222 , Sodium bisulphite ... show moreSodium bisulfite 38-40 % aqueous solution , Monosodium salt of sulfurous acid , Sodium acid bisulfite , Bisulfite de sodium , Sodium hydrogensulfite , Natriumbisulfit , Saures Natriumsulfit , Primäres Natriumsulfit , Natriumhydrogensulfit , Sodium acid sulfite , Sodium sulhydrate , Sodium hydrogensulfite aqueous solution , Sodium metabisulfite aqueous solution , Monosodium sulfite , Leucogen , Hydrogen sulfite sodium , Sulfurous acid, monosodium salt show less
  • Appearance: White solid ; Colourless-to-yellow liquid with characteristic odour ; White crystals or powder with a slight odor of sulfur dioxide.
• CO₂
  • Names: Carbon dioxide , {{plainlist| , CO2 ... show moreCarbonic acid gas , Dry ice , [CO2] , Carbonic anhydride , R-744 , E-290 , E 290 , E290 , Carbonic acid anhydride , Carbon-12 dioxide , Methanedione , Carbon oxide , CO₂ , [Note: Normal constituent of air (about 300 ppm)]. show less
  • Appearance: Colorless gas ; Odourless colourless compressed liquefied gas ; Colorless, odorless gas. [Note: Shipped as a liquefied compressed gas. Solid form is utilized as dry ice.]