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  2. Sodium sulfite - Wikipedia

    en.wikipedia.org/wiki/Sodium_sulfite

    When conducted in warm water, Na 2 SO 3 initially precipitates as a white solid. With more SO 2, the solid dissolves to give the disulfite, which crystallizes upon cooling. [2] SO 2 + 2 NaOH → Na 2 SO 3 + H 2 O. Sodium sulfite is made industrially by treating sulfur dioxide with a solution of sodium carbonate. [3] The overall reaction is:

  3. Sodium bisulfite - Wikipedia

    en.wikipedia.org/wiki/Sodium_bisulfite

    SO 2 + NaOH → NaHSO 3 SO 2 + NaHCO 3 → NaHSO 3 + CO 2. Attempts to crystallize the product yield sodium metabisulfite (also called sodium disulfite), Na 2 S 2 O 5. [6] Upon dissolution of the metabisulfite in water, bisulfite is regenerated: Na 2 S 2 O 5 + H 2 O → 2 Na + + 2 HSO 3 −. Sodium bisulfite is formed during the Wellman-Lord ...

  4. Radium sulfate - Wikipedia

    en.wikipedia.org/wiki/Radium_sulfate

    Radium sulfate (or radium sulphate) is an inorganic compound with the formula RaSO 4 and an average molecular mass of 322.088 g/mol. [3] This white salt is the least soluble of all known sulfate salts. [4] It was formerly used in radiotherapy and smoke detectors, but this has been phased out in favor of less hazardous alternatives.

  5. Sodium sulfate - Wikipedia

    en.wikipedia.org/wiki/Sodium_sulfate

    Na 2 SO 4 + 2 C → Na 2 S + 2 CO 2. This reaction was employed in the Leblanc process, a defunct industrial route to sodium carbonate. Sodium sulfate reacts with sulfuric acid to give the acid salt sodium bisulfate: [9] [10] Na 2 SO 4 + H 2 SO 42 NaHSO 4. Sodium sulfate displays a moderate tendency to form double salts.

  6. Sodium bisulfate - Wikipedia

    en.wikipedia.org/wiki/Sodium_bisulfate

    Sodium bisulfate, also known as sodium hydrogen sulfate, [a] is the sodium salt of the bisulfate anion, with the molecular formula NaHSO 4.Sodium bisulfate is an acid salt formed by partial neutralization of sulfuric acid by an equivalent of sodium base, typically in the form of either sodium hydroxide (lye) or sodium chloride (table salt).

  7. Sodium metabisulfite - Wikipedia

    en.wikipedia.org/wiki/Sodium_metabisulfite

    Sodium metabisulfite or sodium pyrosulfite (IUPAC spelling; Br. E. sodium metabisulphite or sodium pyrosulphite) is an inorganic compound of chemical formula Na 2 S 2 O 5. The substance is sometimes referred to as disodium metabisulfite. It is used as a disinfectant, antioxidant, and preservative agent. [2] When dissolved in water it forms ...

  8. Sodium sulfide - Wikipedia

    en.wikipedia.org/wiki/Sodium_sulfide

    Sodium sulfide is a chemical compound with the formula Na 2 S, or more commonly its hydrate Na 2 S·9H 2 O.Both the anhydrous and the hydrated salts in pure crystalline form are colorless solids, although technical grades of sodium sulfide are generally yellow to brick red owing to the presence of polysulfides and commonly supplied as a crystalline mass, in flake form, or as a fused solid.

  9. Bisulfite - Wikipedia

    en.wikipedia.org/wiki/Bisulfite

    2 HSO − 3 + O 22 SO 24 + 2 H + Its reducing properties are exploited to precipitate gold from auric acid (gold dissolved in aqua regia) and reduce chromium(VI) to chromium(III). In water chlorination, sodium bisulfite is used to reduce the residual 'chlorine' which can have a negative impact on aquatic life.