33, Arsen (As)

Arsenikum, gr. arsenicon = männlich

Massenwirkungsgesetz

         
  Si P S  
  Ge As Se  
  Sn Sb Te  
         
 

Löslichkeitsprodukte:

Substanz Formel Reaktion pL β (g/L)

Aluminiumarsenat AlAsO4 AlAsO4 ↔ Al3+ + AsO43- 15.8 2.09•10-6
Arsen(III)sulfid As2S3 As2S3 ↔ 2As3+ + 3S2- 21.68 4.45•10-3
Arsen(V)sulfid As2S5 As2S5 ↔ 2As5+ + 5S2- 33.41 1.36•10-3
Bariumarsenat Ba3(AsO4)2 Ba3(AsO4)2 ↔ 3Ba2+ + 2AsO43- 50.11 2.57•10-8
Berylliumarsenat Be3(AsO4)2 Be3(AsO4)2 ↔ 3Be2+ + 2AsO43- 27.16 4.42•10-4
Blei(II)arsenat Pb3(AsO4)2 Pb3(AsO4)2 ↔ 3Pb2+ + 2AsO43- 35.39 2.95•10-5
Cadmiumarsenat Cd3(AsO4)2 Cd3(AsO4)2 ↔ 3Cd2+ + 2AsO43- 32.66 7.08•10-5
Calciumarsenat Ca3(AsO4)2 Ca3(AsO4)2 ↔ 3Ca2+ + 2AsO43- 18.17 3.62•10-2
Cer(III)arsenat CeAsO4 CeAsO4 ↔ Ce3+ + AsO43- 22.68 1.28•10-9
Cer(IV)arsenat Ce3(AsO4)4 Ce3(AsO4)4 ↔ 3Ce4+ + 4AsO43- 85 1.99•10-10
Chrom(III)arsenat CrAsO4 CrAsO4 ↔ Cr3+ + AsO43- 20.11 1.68•10-8
Dysprosiumarsenat DyAsO4 DyAsO4 ↔ Dy3+ + AsO43- 23.8 3.79•10-10
Eisen(II)arsenat Fe3(AsO4)2 Fe3(AsO4)2 ↔ 3Fe2+ + 2AsO43- 25.28 1.53•10-3
Eisen(III)arsenat FeAsO4 FeAsO4 ↔ Fe3+ + AsO43- 20.24 1.48•10-8
Erbiumarsenat ErAsO4 ErAsO4 ↔ Er3+ + AsO43- 22.5 1.72•10-9
Europium(III)arsenat EuAsO4 EuAsO4 ↔ Eu3+ + AsO43- 22.5 1.64•10-9
Gadoliniumarsenat GdAsO4 GdAsO4 ↔ Gd3+ + AsO43- 21.7 4.18•10-9
Galliumarsenat GaAsO4 GaAsO4 ↔ Ga3+ + AsO43- 16.66 9.76•10-7
Holmiumarsenat HoAsO4 HoAsO4 ↔ Ho3+ + AsO43- 22.9 1.08•10-9
Iridium(III)arsenat IrAsO4 IrAsO4 ↔ Ir3+ + AsO43- 20.55 1.76•10-8
Kaliumarsenat K3AsO4 K3AsO4 ↔ 3K+ + AsO43- -0.91 1.9•102
Kobalt(II)arsenat Co3(AsO4)2 Co3(AsO4)2 ↔ 3Co2+ + 2AsO43- 28.17 4.14•10-4
Kupfer(II)arsenat Cu3(AsO4)2 Cu3(AsO4)2 ↔ 3Cu2+ + 2AsO43- 35.1 1.75•10-5
Lanthanarsenat LaAsO4 LaAsO4 ↔ La3+ + AsO43- 22.68 1.27•10-9
Lutetiumarsenat LuAsO4 LuAsO4 ↔ Lu3+ + AsO43- 22.7 1.4•10-9
Magnesiumarsenat Mg3(AsO4)2 Mg3(AsO4)2 ↔ 3Mg2+ + 2AsO43- 19.68 1.59•10-2
Mangan(II)arsenat Mn3(AsO4)2 Mn3(AsO4)2 ↔ 3Mn2+ + 2AsO43- 28.72 3.13•10-4
Neodymarsenat NdAsO4 NdAsO4 ↔ Nd3+ + AsO43- 21.9 3.18•10-9
Nickelarsenat Ni3(AsO4)2 Ni3(AsO4)2 ↔ 3Ni2+ + 2AsO43- 25.51 1.41•10-3
Palladium(II)arsenat Pd3(AsO4)2 Pd3(AsO4)2 ↔ 3Pd2+ + 2AsO43- 29.34 3.17•10-4
Praseodym(III)arsenat PrAsO4 PrAsO4 ↔ Pr3+ + AsO43- 22 2.8•10-9
Quecksilber(I)arsenat [Hg2]3(AsO4)2 [Hg2]3(AsO4)2 ↔ 3Hg22+ + 2AsO43- 30.7 4.21•10-4
Quecksilber(II)arsenat Hg3(AsO4)2 Hg3(AsO4)2 ↔ 3Hg2+ + 2AsO43- 38.6 6.57•10-6
Samariumarsenat SmAsO4 SmAsO4 ↔ Sm3+ + AsO43- 22.7 1.29•10-9
Scandiumarsenat ScAsO4 ScAsO4 ↔ Sc3+ + AsO43- 26.7 8.21•10-12
Silberarsenat Ag3AsO4 Ag3AsO4 ↔ 3Ag+ + AsO43- 21.99 6.45•10-4
Strontiumarsenat Sr3(AsO4)2 Sr3(AsO4)2 ↔ 3Sr2+ + 2AsO43- 18.37 4.49•10-2
Terbium(III)arsenat TbAsO4 TbAsO4 ↔ Tb3+ + AsO43- 23.1 8.39•10-10
Thuliumarsenat TmAsO4 TmAsO4 ↔ Tm3+ + AsO43- 23.1 8.68•10-10
Uranyl(VI)hydrogenarsenat [UO2]HAsO4 [UO2]HAsO4 ↔ UO22+ + HAsO42- 10.5 2.31•10-3
Wismutarsenat BiAsO4 BiAsO4 ↔ Bi3+ + AsO43- 9.35 7.35•10-3
Ytterbium(III)arsenat YbAsO4 YbAsO4 ↔ Yb3+ + AsO43- 22.7 1.39•10-9
Yttriumarsenat YAsO4 YAsO4 ↔ Y3+ + AsO43- 21.77 2.97•10-9
Zinkarsenat Zn3(AsO4)2 Zn3(AsO4)2 ↔ 3Zn2+ + 2AsO43- 27.55 5.74•10-4