Saturated methods in distilled h2o contain sulfide at approximately 4 × 10−6 mol/liter. The solubility in water containing hydrogen sulfide is relatively reduced, but of the exact same order of magnitude. In alkaline Option, the sulfides dissolve, with formation of thioarsenites or thioarsenates. These sulfides are decomposed by chilly h2o http://https//chemscenter.com