Solubility Products

Table of Contents

This page contains several tables detailing the standard solubility products for several different substances. The table has been separated by substance, as listed below:

Aluminum Chromium Magnesium Silver
Barium Cobalt Manganese Strontium
Bismuth Copper Mercury Thallium
Cadmium Iron Nickel Tin
Calcium Lead Potassium Zinc

Aluminum

Substance Ksp at 25 °C
Al(OH)3
2×10−322\times{10}^{-32}
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Barium

Substance Ksp at 25 °C
BaCO3
1.6×10−91.6 \times {10}^{-9}
BaC2O4•2H2O
1.1×10−71.1 \times {10}^{-7}
BaSO4
2.3×10−82.3 \times {10}^{-8}
BaCrO4
8.5×10−118.5 \times {10}^{-11}
BaF2
2.4×10−52.4 \times {10}^{-5}
Ba(OH)2•8H2O
5.0×10−35.0 \times {10}^{-3}
Ba3(PO4)2
6×10−396 \times {10}^{-39}
Ba3(AsO4)2
1.1×10−131.1 \times {10}^{-13}
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Bismuth

Substance Ksp at 25 °C
BiO(OH)
4×10−104 \times {10}^{-10}
BiOCl
1.8×10−311.8 \times {10}^{-31}
Bi2S3
1×10−971 \times {10}^{-97}
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Cadmium

Substance Ksp at 25 °C
Cd(OH)2
5.9×10−155.9 \times {10}^{-15}
CdS
1.0×10−281.0 \times {10}^{-28}
CdCO3
5.2×10−125.2 \times {10}^{-12}
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Calcium

Substance Ksp at 25 °C
Ca(OH)2
1.3×10−61.3 \times {10}^{-6}
CaCO3
8.7×10−98.7 \times {10}^{-9}
CaSO4•2H2O
6.1×10−56.1 \times {10}^{-5}
CaC2O4•H2O
1.96×10−81.96 \times {10}^{-8}
Ca3(PO4)2
1.3×10−321.3 \times {10}^{-32}
CaHPO4
7×10−77 \times {10}^{-7}
CaF2
4.0×10−114.0 \times {10}^{-11}
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Chromium

Substance Ksp at 25 °C
Cr(OH)3
6.7×10−316.7 \times {10}^{-31}
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Cobalt

Substance Ksp at 25 °C
Co(OH)2
2.5×10−162.5 \times {10}^{-16}
CoS(α)
5×10−225 \times {10}^{-22}
CoS(β)
3×10−263 \times {10}^{-26}
CoCO3
1.4×10−131.4 \times {10}^{-13}
Co(OH)3
2.5×10−432.5 \times {10}^{-43}
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Copper

Substance Ksp at 25 °C
CuCl
1.2×10−61.2 \times {10}^{-6}
CuBr
6.27×10−96.27 \times {10}^{-9}
CuI
1.27×10−121.27 \times {10}^{-12}
CuSCN
1.6×10−111.6 \times {10}^{-11}
Cu2S
2.5×10−482.5 \times {10}^{-48}
Cu(OH)2
2.2×10−202.2 \times {10}^{-20}
CuS
8.5×10−458.5 \times {10}^{-45}
CuCO3
2.5×10−102.5 \times {10}^{-10}
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Iron

Substance Ksp at 25 °C
Fe(OH)2
1.8×10−151.8 \times {10}^{-15}
FeCO3
2.1×10−112.1 \times {10}^{-11}
FeS
3.7×10−193.7 \times {10}^{-19}
Fe(OH)3
4×10−384 \times {10}^{-38}
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Lead

Substance Ksp at 25 °C
Pb(OH)2
1.2×10−151.2 \times {10}^{-15}
PbF2
4×10−84 \times {10}^{-8}
PbCl2
1.6×10−51.6 \times {10}^{-5}
PbBr2
4.6×10−64.6 \times {10}^{-6}
PbI2
1.4×10−81.4 \times {10}^{-8}
PbCO3
1.5×10−151.5 \times {10}^{-15}
PbS
7×10−297 \times {10}^{-29}
PbCrO4
2×10−162 \times {10}^{-16}
PbSO4
1.3×10−81.3 \times {10}^{-8}
Pb3(PO4)2
1×10−541 \times {10}^{-54}
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Magnesium

Substance Ksp at 25 °C
Mg(OH)2
8.9×10−128.9 \times {10}^{-12}
MgCO3•3H2O
ca1×10−5ca1 \times {10}^{-5}
MgNH4PO4
3×10−133 \times {10}^{-13}
MgF2
6.4×10−96.4 \times {10}^{-9}
MgC2O4
7×10−77 \times {10}^{-7}
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Manganese

Substance Ksp at 25 °C
Mn(OH)2
2×10−132 \times {10}^{-13}
MnCO3
8.8×10−118.8 \times {10}^{-11}
MnS
2.3×10−132.3 \times {10}^{-13}
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Mercury

Substance Ksp at 25 °C
Hg2O•H2O
3.6×10−263.6 \times {10}^{-26}
Hg2Cl2
1.1×10−181.1 \times {10}^{-18}
Hg2Br2
1.3×10−221.3 \times {10}^{-22}
Hg2I2
4.5×10−294.5 \times {10}^{-29}
Hg2CO3
9×10−159 \times {10}^{-15}
Hg2SO4
7.4×10−77.4 \times {10}^{-7}
Hg2S
1.0×10−471.0 \times {10}^{-47}
Hg2CrO4
2×10−92 \times {10}^{-9}
HgS
1.6×10−541.6 \times {10}^{-54}
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Nickel

Substance Ksp at 25 °C
Ni(OH)2
1.6×10−161.6 \times {10}^{-16}
NiCO3
1.4×10−71.4 \times {10}^{-7}
NiS(α)
4×10−204 \times {10}^{-20}
NiS(β)
1.3×10−251.3 \times {10}^{-25}
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Potassium

Substance Ksp at 25 °C
KClO4
1.05×10−21.05 \times {10}^{-2}
K2PtCl6
7.48×10−67.48 \times {10}^{-6}
KHC4H4O6
3×10−43 \times {10}^{-4}
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Silver

Substance Ksp at 25 °C
21Ag2O(Ag++OH−){}_{2}^{1}\text{A}{\text{g}}_{\text{2}}\text{O}\left({\text{Ag}}^{+}+{\text{OH}}^{-}\right)
2×10−82 \times {10}^{-8}
AgCl
1.6×10−101.6 \times {10}^{-10}
AgBr
5.0×10−135.0 \times {10}^{-13}
AgI
1.5×10−161.5 \times {10}^{-16}
AgCN
1.2×10−161.2 \times {10}^{-16}
AgSCN
1.0×10−121.0 \times {10}^{-12}
Ag2S
1.6×10−491.6 \times {10}^{-49}
Ag2CO3
8.1×10−128.1 \times {10}^{-12}
Ag2CrO4
9.0×10−129.0 \times {10}^{-12}
Ag4Fe(CN)6
1.55×10−411.55 \times {10}^{-41}
Ag2SO4
1.2×10−51.2 \times {10}^{-5}
Ag3PO4
1.8×10−181.8 \times {10}^{-18}
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Strontium

Substance Ksp at 25 °C
Sr(OH)2•8H2O
3.2×10−43.2 \times {10}^{-4}
SrCO3
7×10−107 \times {10}^{-10}
SrCrO4
3.6×10−53.6 \times {10}^{-5}
SrSO4
3.2×10−73.2 \times {10}^{-7}
SrC2O4•H2O
4×10−74 \times {10}^{-7}
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Thallium

Substance Ksp at 25 °C
TlCl
1.7×10−41.7 \times {10}^{-4}
TlSCN
1.6×10−41.6 \times {10}^{-4}
Tl2S
6×10−226 \times {10}^{-22}
Tl(OH)3
6.3×10−466.3 \times {10}^{-46}
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Tin

Substance Ksp at 25 °C
Sn(OH)2
3×10−273 \times {10}^{-27}
SnS
1×10−261 \times {10}^{-26}
Sn(OH)4
1.0×10−571.0 \times {10}^{-57}
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Zinc

Substance Ksp at 25 °C
ZnCO3
2×10−102 \times {10}^{-10}
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