Acid-soluble sulfide

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An acid-soluble sulfide will dissolve in acidic liquids (pH<3) in the absence of an oxidizing agent (which is principally ferric iron). If it does not dissolve, it is an acid-stable sulfide.

Acid-soluble metal sulfides are leached by both of the leaching chemicals Fe3+ and H+ via the polysulfide pathway.

Examples of acid-soluble sulfides

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