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Selected Solubility Product Constants

Substance Ksp at 25 °C

    Aluminum
Al(OH)3 1.9 × 10–33
    Barium
Ba(OH)2 5.0 × 10–3
BaCO3 8.1 × 10–9
BaSO4 1.1 × 10–10
Ba3(PO4)2 3.4 × 10–23
    Cadmium
Cd(OH)2 2.5 × 10–14
CdCO3 5.2 × 10–12
CdS 8.0 × 10–27
    Calcium
Ca(OH)2 5.5 × 10–6
CaCO3 4.8 × 10–9
Ca3(PO4)2 1.0 × 10–26
CaF2 3.9 × 10–11
    Chromium
Cr(OH)3 6.3 × 10–31
    Cobalt
Co(OH)2 1.6 × 10–15
CoS 4.0 × 10–21
    Copper
Cu(OH)2 2.2 × 10–20
Cu2S 1.6 × 10–48
CuCO3 1.4 × 10–10
CuS 6.3 × 10–36
    Iron
Fe(OH)2 8.0 × 10–16
FeS 6.3 × 10–18
Fe(OH)3 2.5 × 10–39
FePO4 9.9 × 10–29
    Lead
Pb(OH)2 2.8 × 10–16
PbF2 3.7 × 10–8
PbCl2 1.7 × 10–5
PbBr2 6.3 × 10–6
PbI2 6.5 × 10–9
PbCrO4 1.8 × 10–14
PbSO4 1.7 × 10–8
PbS 8.4 × 10–28
    Magnesium
Mg(OH)2 1.8 × 10–11
    Manganese
Mn(OH)2 1.9 × 10–13
MnCO3 8.8 × 10–11
MnS 5.6 × 10–16
    Nickel
Ni(OH)2 1.6 × 10–14
    Silver
AgCl 1.8 × 10–10
AgBr 5.0 × 10–13
AgI 8.3 × 10–17
AgCN 1.2 × 10–16
Ag2S 6.3 × 10–50
Ag2CrO4 1.1 × 10–12
Ag3PO4 2.6 × 10–18
    Tin
Sn(OH)2 1.4 × 10–28
SnS 1.3 × 10–23
    Zinc
ZnCO3 1.0 × 10–10
Zn(OH)2 4.5 × 10–17
ZnS 1.1 × 10–21