A reaction between sulfur and copper powder produce:Cu2S orCuS
it depends on whether you are starting with Cu(I) or Cu(II) if it is Cu(I) then Cu2S if it is Cu(II) then CuS
This Site Might Help You. RE: Copper and sulfur reaction produce? A reaction between sulfur and copper powder produce: Cu2S or CuS
It can be anything of: CuS?, villamaninite or (Cu,Ni,Co,Fe)S? CuS, covellite , copper monosulfide Cu?S? (Cu?.??S), yarrowite Cu??S?? (Cu?.??S) spionkopite Cu?S? (Cu?.?S), geerite Cu?S? (Cu?.??S), anilite Cu?S? (Cu?.?S), digenite Cu??S?? (Cu?.??S), djurleite Cu?S, chalcocite But mostly it is Cu?S or CuS Cu?S can be prepared by heating copper strongly in sulfur vapour or H?S. The reaction of copper powder in molten sulfur rapidly produces Cu?S, whereas pellets of copper require much higher temperature A black colloidal precipitate of CuS is formed when hydrogen sulfide, H?S, is bubbled through solutions of Cu(II) salts. Hope this helps! :)