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Hydrosulfites | Article about Hydrosulfites by The Free ...

Hydrosulfites (also called bisulfites), acid salts of sulfurous acid, H2S03—for example, KHS03. Hydrosulfites are produced by the reaction K2C03 + 2S02 + H20 = 2KHSO 3+ C02. As opposed to the majority of neutral salts of H2S03, or sulfites, all hydrosulfites are readily soluble in water. In solutions hydrosulfites are gradually oxidized by atmospheric ...

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