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|Section2= |Section3= |Section4= |Section7= |Section8= }} Lead(II) sulfide (also spelled ''sulphide'') is an inorganic compound with the formula Pb. It finds limited use in electronic devices. PbS, also known as galena, is the principal ore, and most important compound of lead. ==Formation, basic properties, related materials== Addition of hydrogen sulfide or sulfide salts to a solution of lead ions gives a poorly soluble black product consisting of PbS: :Pb2+ + H2S → PbS + 2 H+ The equilibrium constant for this reaction is 3 M.〔 〕 This reaction, which entails a dramatic color change from colourless or white to black, was once used in qualitative inorganic analysis. The presence of hydrogen sulfide or sulfide ions is still routinely tested using "lead acetate paper." Like the related materials PbSe and PbTe, PbS is a semiconductor.〔;〕 In fact, lead sulfide was one of the earliest materials to be used as a semiconductor.〔C.Michael Hogan. 2011. (''Sulfur''. Encyclopedia of Earth, eds. A.Jorgensen and C.J.Cleveland, National Council for Science and the environment, Washington DC )〕 Lead sulfide crystallizes in the sodium chloride motif, unlike many other IV-VI semiconductors. Since PbS is the main ore of lead, much effort has focused on its conversion. A major process involves smelting of PbS followed by reduction of the resulting oxide. Idealized equations for these two steps are: :2 PbS + 3 O2 → 2 PbO + 2 SO2 :PbO + C → Pb + CO The sulfur dioxide is converted to sulfuric acid. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Lead(II) sulfide」の詳細全文を読む スポンサード リンク
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