78, Platin (Pt)

span. platina = kleines Silber

Massenwirkungsgesetz

         
  Rh Pd Ag  
  Ir Pt Au  
  Mt Ds Rg  
         
 

Löslichkeitsprodukte:

Substanz Formel Reaktion pL β (g/L)

Ammoniumhexabromidoplatinat(IV) (NH4)2PtBr6 (NH4)2PtBr6 ↔ 2NH4+ + PtBr62- 5.64 5.9•100
Ammoniumhexachloridoplatinat(IV) (NH4)2PtCl6 (NH4)2PtCl6 ↔ 2NH4+ + PtCl62- 5.25 4.97•100
Cäsiumhexachloridoplatinat(IV) Cs2PtCl6 Cs2PtCl6 ↔ 2Cs+ + PtCl62- 7.5 1.34•100
Cäsiumhexafluoridoplatinat(IV) Cs2PtF6 Cs2PtF6 ↔ 2Cs+ + PtF62- 5.62 4.85•100
Kaliumhexabromidoplatinat(IV) K2PtBr6 K2PtBr6 ↔ 2K+ + PtBr62- 4.2 1.89•101
Kaliumhexachloridoplatinat(IV) K2PtCl6 K2PtCl6 ↔ 2K+ + PtCl62- 5.13 5.97•100
Kaliumhexafluoridoplatinat(IV) K2PtF6 K2PtF6 ↔ 2K+ + PtF62- 4.54 7.48•100
Platin(II)hydroxid Pt(OH)2 Pt(OH)2 ↔ Pt2+ + 2OH- 24 1.44•10-6
Platin(II)sulfid PtS PtS ↔ Pt2+ + S2- 73 7.18•10-35
Platin(IV)bromid PtBr4 PtBr4 ↔ Pt4+ + 4Br- 40.5 1.35•10-6
Rubidiumhexachloridoplatinat(IV) Rb2PtCl6 Rb2PtCl6 ↔ 2Rb+ + PtCl62- 7.2 1.45•100
Rubidiumhexafluoridoplatinat(IV) Rb2PtF6 Rb2PtF6 ↔ 2Rb+ + PtF62- 6.12 2.76•100
Thallium(I)hexachloridoplatinat(IV) Tl2PtCl6 Tl2PtCl6 ↔ 2Tl+ + PtCl62- 11.4 8.15•10-2

Komplexdissoziationskonstanten:

Komplex Formel Reaktion pD

Tetraamminplatin(II) Pt(NH3)42+ Pt(NH3)42+ ↔ Pt2+ + 4NH3 35.3
Tetrabromidoplatinat(II) PtBr42- PtBr42- ↔ Pt2+ + 4Br- 20.5
Tetrachloridoplatinat(II) PtCl42- PtCl42- ↔ Pt2+ + 4Cl- 17.66
Trisulfatoplatinat(II) Pt(SO4)34- Pt(SO4)34- ↔ Pt2+ + 3SO42- 3.67