28, Nickel (Ni)

Niccolum, mhd. Nickel = Kobold, Teufel

Massenwirkungsgesetz
         
   
  Co Ni Cu  
  Rh Pd Ag  
         
 

Löslichkeitsprodukte:
Substanz Formel Reaktion pL β (g/L)
Nickel(II)selenid NiSe NiSe ↔ Ni2+ + Se2- 32.7 6.15•10-15
Nickelarsenat Ni3(AsO4)2 Ni3(AsO4)2 ↔ 3Ni2+ + 2AsO43- 25.51 1.41•10-3
Nickelbromat Ni(BrO3)2 Ni(BrO3)2 ↔ Ni2+ + 2BrO3- -0.45 2.8•102
Nickelcarbonat NiCO3 NiCO3 ↔ Ni2+ + CO32- 6.85 4.46•10-2
Nickelcyanid Ni(CN)2 Ni(CN)2 ↔ Ni2+ + 2CN- 9.21 5.92•10-2
Nickeldiphosphat Ni2P2O7 Ni2P2O7 ↔ 2Ni2+ + P2O74- 12.77 1.02•10-2
Nickelfluorid NiF2 NiF2 ↔ Ni2+ + 2F- 3.55 4•100
Nickelformiat Ni(HCOO)2 Ni(HCOO)2 ↔ Ni2+ + 2HCOO- 1.38 3.25•101
Nickelhexacyanidoferrat(II) Ni2[Fe(CN)6] Ni2[Fe(CN)6] ↔ 2Ni2+ + Fe(CN)64- 14.89 2.26•10-3
Nickelhydroxid Ni(OH)2 Ni(OH)2 ↔ Ni2+ + 2OH- 15.26 4.78•10-4
Nickeliodat Ni(IO3)2 Ni(IO3)2 ↔ Ni2+ + 2IO3- 4.33 9.27•100
Nickelmolybdat NiMoO4 NiMoO4 ↔ Ni2+ + MoO42- 11.14 5.88•10-4
Nickeloxalat NiC2O4 NiC2O4 ↔ Ni2+ + C2O42- 9.4 2.93•10-3
Nickelphosphat Ni3(PO4)2 Ni3(PO4)2 ↔ 3Ni2+ + 2PO43- 31.32 7.81•10-5
Nickelselenat NiSeO4 NiSeO4 ↔ Ni2+ + SeO42- 6.6 1.01•10-1
Nickelselenit NiSeO3 NiSeO3 ↔ Ni2+ + SeO32- 5.15 4.94•10-1
Nickelsulfid, α-Form NiS NiS ↔ Ni2+ + S2- 18.5 5.1•10-8
Nickelsulfid, β-Form NiS NiS ↔ Ni2+ + S2- 24 9.08•10-11
Nickelsulfid, γ-Form NiS NiS ↔ Ni2+ + S2- 25.7 1.28•10-11

Komplexdissoziationskonstanten:
Komplex Formel Reaktion pD
Dicarbonatoniccolat(II) Ni(CO3)22- Ni(CO3)22- ↔ Ni2+ + 2CO32- 10.1
Disulfatoniccolat(II) Ni(SO4)22- Ni(SO4)22- ↔ Ni2+ + 2SO42- 2.896
Hexaamminnickel Ni(NH3)62+ Ni(NH3)62+ ↔ Ni2+ + 6NH3 8.74
Nickel(II)-EDTA-Komplex Ni(EDTA)2- Ni(EDTA)2- ↔ Ni2+ + EDTA4- 18.6
Tetracyanidoniccolat(II) Ni(CN)42- Ni(CN)42- ↔ Ni2+ + 4CN- 29
Trihydroxidoniccolat(II) Ni(OH)3- Ni(OH)3- ↔ Ni2+ + 3OH- 11
Trioxalatoniccolat(II) Ni(C2O4)34- Ni(C2O4)34- ↔ Ni2+ + 3C2O42- 8.48
Trithiocyanatoniccolat(II) Ni(SCN)3- Ni(SCN)3- ↔ Ni2+ + 3SCN- 1.8