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Sodium bisulfite (or sodium bisulphite, sodium hydrogen sulfite) is a chemical mixture with the approximate chemical formula NaHSO 3. Sodium bisulfite is not a real compound, [ 2 ] but a mixture of salts that dissolve in water to give solutions composed of sodium and bisulfite ions.
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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).
These chemicals cleave the bonds between the cellulose and lignin components of the lignocellulose. A variety of sulfite/bisulfite salts are used, including sodium (Na +), calcium (Ca 2+), potassium (K +), magnesium (Mg 2+), and ammonium (NH 4 +). The lignin is converted to lignosulfonates, which are soluble and can be separated from the ...
The bisulfite ion (IUPAC-recommended nomenclature: hydrogensulfite) is the ion HSO − 3. Salts containing the HSO − 3 ion are also known as "sulfite lyes". [1] Sodium bisulfite is used interchangeably with sodium metabisulfite (Na 2 S 2 O 5). Sodium metabisulfite dissolves in water to give a solution of Na + HSO − 3. Na 2 S 2 O 5 + H 2 O ...
Sodium dithionate is produced by the oxidation of sodium bisulfite by manganese dioxide: [1] 2 NaHSO 3 + MnO 2 → Na 2 S 2 O 6 + MnO + H 2 O. Alternatively, it can be prepared by the oxidation of sodium sulfite by the silver(I) cation: [1] Na 2 SO 3 + 2 Ag + + SO 2− 3 → Na 2 S 2 O 6 + 2 Ag. Another method is via oxidation of sodium ...
Bisulfide (or bisulphide in British English) is an inorganic anion with the chemical formula HS − (also written as SH −).It contributes no color to bisulfide salts, and its salts may have a distinctive putrid smell.
Potassium metabisulfite is sometimes used to precipitate gold from solution in aqua regia (as an alternative to sodium sulfite). It is a component of certain photographic developers and solutions used in photographic processing, keeping active developing species from contact with oxygen. [6]