58, Cer (Ce)

Cerium, Planetoid Ceres

Massenwirkungsgesetz

         
   
  La Ce Pr  
  Ac Th Pa  
         
 

Löslichkeitsprodukte:

Substanz Formel Reaktion pL β (g/L)

Cer(III)acetat Ce(CH3COO)3 Ce(CH3COO)3 ↔ Ce3+ + 3CH3COO- 6.4 3.5•100
Cer(III)arsenat CeAsO4 CeAsO4 ↔ Ce3+ + AsO43- 22.68 1.28•10-9
Cer(III)carbonat Ce2(CO3)2 Ce2(CO3)2 ↔ 2Ce3+ + 3CO32- 35.1 1.5•10-5
Cer(III)fluorid CeF3 CeF3 ↔ Ce3+ + 3F- 15.1 1.45•10-2
Cer(III)hydroxid Ce(OH)3 Ce(OH)3 ↔ Ce3+ + 3OH- 19.8 9.41•10-4
Cer(III)iodat Ce(IO3)3 Ce(IO3)3 ↔ Ce3+ + 3IO3- 9.5 1.23•100
Cer(III)oxalat Ce2(C2O4)3 Ce2(C2O4)3 ↔ 2Ce3+ + 3C2O42- 30.39 1.78•10-4
Cer(III)phosphat CePO4 CePO4 ↔ Ce3+ + PO43- 24.6 1.18•10-10
Cer(III)selenat Ce2(SeO4)3 Ce2(SeO4)3 ↔ 2Ce3+ + 3SeO42- -0.51 3.52•102
Cer(III)selenit Ce2(SeO3)3 Ce2(SeO3)3 ↔ 2Ce3+ + 3SeO32- 24.43 3.37•10-3
Cer(III)sulfat Ce2(SO4)3 Ce2(SO4)3 ↔ 2Ce3+ + 3SO42- 1.77 9.86•101
Cer(III)sulfid Ce2S3 Ce2S3 ↔ 2Ce3+ + 3S2- 10.22 1.33•100
Cer(IV)arsenat Ce3(AsO4)4 Ce3(AsO4)4 ↔ 3Ce4+ + 4AsO43- 85 1.99•10-10
Cer(IV)hydroxid Ce(OH)4 Ce(OH)4 ↔ Ce4+ + 4OH- 47.7 1.98•10-8
Cer(IV)iodat Ce(IO3)4 Ce(IO3)4 ↔ Ce4+ + 4IO3- 16.3 1.52•10-1
Cer(IV)phosphat Ce3(PO4)4 Ce3(PO4)4 ↔ 3Ce4+ + 4PO43- 90.1 3.04•10-11

Komplexdissoziationskonstanten:

Komplex Formel Reaktion pD

Cer(III)-EDTA-Komplex Ce(EDTA)- Ce(EDTA)- ↔ Ce3+ + EDTA4- 15.94
Dicarbonatocerat(III) Ce(CO3)2- Ce(CO3)2- ↔ Ce3+ + 2CO32- 12.5
Dihydrogenphosphatocerat(III) Ce(HPO4)2- Ce(HPO4)2- ↔ Ce3+ + 2HPO42- 8.7
Diphosphatocerat(III) Ce(PO4)23- Ce(PO4)23- ↔ Ce3+ + 2PO43- 18.5
Tetrachloridocerat(III) CeCl4- CeCl4- ↔ Ce3+ + 4Cl- -0.75
Tetrafluoridocerat(III) CeF4- CeF4- ↔ Ce3+ + 4F- 11.39
Trioxalatocerat(III) Ce(C2O4)33- Ce(C2O4)33- ↔ Ce3+ + 3C2O42- 9.6