57, Lanthan (La)

gr. lanthanein = versteckt, verborgen sein

Massenwirkungsgesetz
         
  Sr Y Zr  
  Ba La Ce  
  Ra Ac Th  
         
 

Löslichkeitsprodukte:
Substanz Formel Reaktion pL β (g/L)
Lanthanacetat La(CH3COO)3 La(CH3COO)3 ↔ La3+ + 3CH3COO- -0.34 1.69•102
Lanthanarsenat LaAsO4 LaAsO4 ↔ La3+ + AsO43- 22.68 1.27•10-9
Lanthanbromat La(BrO3)3 La(BrO3)3 ↔ La3+ + 3BrO3- 2.5 5.44•101
Lanthancarbonat La2(CO3)3 La2(CO3)3 ↔ 2La3+ + 3CO32- 35.3 1.56•10-5
Lanthanfluorid LaF3 LaF3 ↔ La3+ + 3F- 16.2 7.66•10-3
Lanthanhydroxid La(OH)3 La(OH)3 ↔ La3+ + 3OH- 18.7 1.76•10-3
Lanthaniodat La(IO3)3 La(IO3)3 ↔ La3+ + 3IO3- 11.12 4.83•10-1
Lanthanmolybdat La2(MoO4)3 La2(MoO4)3 ↔ 2La3+ + 3MoO42- 20.4 2.47•10-2
Lanthanoxalat La2(C2O4)3 La2(C2O4)3 ↔ 2La3+ + 3C2O42- 29.22 3.04•10-4
Lanthanphosphat LaPO4 LaPO4 ↔ La3+ + PO43- 24.7 1.04•10-10
Lanthanselenat La2(SeO4)3 La2(SeO4)3 ↔ 2La3+ + 3SeO42- -1.05 4.49•102
Lanthansulfat La2(SO4)3 La2(SO4)3 ↔ 2La3+ + 3SO42- 4.89 2.33•101
Lanthansulfid La2S3 La2S3 ↔ 2La3+ + 3S2- 12.7 4.23•10-1
Lanthanwolframat La2(WO4)3 La2(WO4)3 ↔ 2La3+ + 3WO42- 3.9 6.64•101

Komplexdissoziationskonstanten:
Komplex Formel Reaktion pD
Dicarbonatolanthanat La(CO3)2- La(CO3)2- ↔ La3+ + 2CO32- 11.86
Dioxalatolanthanat La(C2O4)2- La(C2O4)2- ↔ La3+ + 2C2O42- 9.55
Diphosphatolanthanat La(PO4)23- La(PO4)23- ↔ La3+ + 2PO43- 17.6
Disulfatolanthanat La(SO4)2- La(SO4)2- ↔ La3+ + 2SO42- 5.3
Lanthan-EDTA-Komplex La(EDTA)- La(EDTA)- ↔ La3+ + EDTA4- 15.46
Tetrachloridolanthanat LaCl4- LaCl4- ↔ La3+ + 4Cl- -0.82
Tetrafluoridolanthanat LaF4- LaF4- ↔ La3+ + 4F- 10.37