Chemistry Reference
In-Depth Information
TABLE 3.13
Solubility Product Constants at 298 K
Hydroxide
K
sp
Sulphide
K
sp
Mg(OH)
2
1.5⋅10
−11
Tl
2
S
1⋅10
−22
Ca(OH)
2
7.9⋅10
−6
Bi
2
S
3
2⋅10
−72
Al(OH)
3
Sb
2
S
3
1.9⋅10
−33
2⋅10
−93
Sn(OH)
2
2⋅10
−26
SnS
8⋅10
−29
Pb(OH)
2
2.8⋅10
−16
PbS
8⋅10
−28
Cr(OH)
3
7⋅10
−31
Mn(OH)
2
4.5⋅10
−14
MnS
5⋅10
−15
Fe(OH)
2
FeS
8⋅10
−15
5⋅10
−18
Fe(OH)
3
6.3⋅10
−38
Fe
2
S
3
1⋅10
−88
Co(OH)
2
2⋅10
−16
CoS(α)
6⋅10
−21
Co(OH)
3
4⋅10
−45
CoS(β)
8⋅10
−23
Ni(OH)
2
2⋅10
−15
NiS(α)
3⋅10
−21
Zn(OH)
2
ZnS
4.5⋅10
−17
1.1⋅10
−21
Cu(OH)
2
2⋅10
−19
CuS
8.7⋅10
−36
Cd(OH)
2
1.2⋅10
−14
CdS
4⋅10
−29
Cu
2
S
1.6⋅10
−48
Ag
2
S
7⋅10
−50
HgS
3⋅10
−53
Source:
Data from B.G. Segal,
Chemistry
:
Experiments and Theory
(New York:
Wiley, 1989).
Values for the steric parameter Vi/100
i
/100 were calculated from atomic parachors,
through a characteristic molecular volume (Vx) to a corresponding intrinsic
molecular volume (Vi).
i
).
For π*, dipole moments, polarizabilities and electronegativity were used, whereas
for β and α ionization potentials (basicity), electron affinities (acidity) and pK values
were the used data.
ACKNOWLEDGMENTS
The author gratefully thanks Dr. Monica Enache for the generous help given in writ-
ing this paper.
REFERENCES
Ahrland, S. 1968. Scales of softness for acceptors and donors.
Chem. Phys. Lett.
2(5):303-306.
Ahrland, S., J. Chatt, and N.R. Davies. 1958. The relative affinities of ligand atoms for accep-
tor molecules and ions.
Quart. Rev.
(London) 12:265-276.
Allen, L.C. 1989. Electronegativity is the average one-electron energy of the valence-shell
electrons in ground-state free atoms.
J. Am. Chem. Soc
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