Saturated remedies in distilled h2o contain sulfide at roughly 4 × 10−6 mol/liter. The solubility in water containing hydrogen sulfide is considerably decreased, but of a similar order of magnitude. In alkaline solution, the sulfides dissolve, with formation of thioarsenites or thioarsenates. These sulfides are decomposed by cold h2o in https://arsenicllloxide62727.mycoolwiki.com/7680214/arsenic_lll_oxide_fundamentals_explained