Ag + , Pb 2+ , Hg 2 2+ - PowerPoint PPT Presentation

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Ag + , Pb 2+ , Hg 2 2+
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Ag + , Pb 2+ , Hg 2 2+

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  1. Ag+, Pb2+, Hg22+ Cu2+, Bi3+, Cd2+, Hg2+, H2AsO3-, AsO43-, Sb3+, Sn2+, Sn4+ Al3+, Fe2+, Fe3+, Co2+, Ni2+, Cr3+, Zn2+, Mn2+ Ba2+, Ca2+, Mg2+ Na+, K+, NH4+ Add 6M HCl Precipitate Insoluble Chlorides: AgCl, Hg2Cl2, PbCl2 Cu2+, Bi3+, Cd2+, Hg2+, H2AsO3-, AsO43-, Sb3+, Sn2+, Sn4+ Al3+, Fe2+, Fe3+, Co2+, Ni2+, Cr3+, Zn2+, Mn2+ Ba2+, Ca2+, Mg2+ Na+, K+, NH4+ Group 1 Add H2S, 0.2M HCl Precipitate Acid-Insoluble Sulfides: CuS, Bi2S3, CdS, HgS, As2S3, Sb2S3, SnS2 Al3+, Fe2+, Fe3+, Co2+, Ni2+, Cr3+, Zn2+, Mn2+ Ba2+, Ca2+, Mg2+ Na+, K+, NH4+ Group 2 Add (NH4)2S, pH 8.0 Precipitate Base-Insoluble Hydroxides and Sulfides: Al(OH)3, Fe (OH)3, Cr(OH)3, CoS, NiS, ZnS, MnS Ba2+, Ca2+, Mg2+ Na+, K+, NH4+ Group 3 Add (NH4)2HPO4 Precipitate Insoluble Phosphates: Ba3(PO4)2, Ca3(PO4)2, MgNH4PO4 Na+, K+, NH4+ Group 5 Group 4