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Solubility Products
Substance K sp at 25 °C
aluminum
Al(OH) 3 2 × 10 −32
barium
BaCO 3 1.6 × 10 −9
BaC 2 O 4 ·2H 2 O 1.1 × 10 −7
BaSO 4 2.3 × 10 −8
BaCrO 4 8.5 × 10 −11
BaF 2 2.4 × 10 −5
Ba(OH) 2 ·8H 2 O 5.0 × 10 −3
Ba 3 (PO 4 ) 2 6 × 10 −39
Ba 3 (AsO 4 ) 2 1.1 × 10 −13
bismuth
BiO(OH) 4 × 10 −10
BiOCl 1.8 × 10 −31
Bi 2 S 3 1 × 10 −97
cadmium
Cd(OH) 2 5.9 × 10 −15
CdS 1.0 × 10 −28
CdCO 3 5.2 × 10 −12
calcium
Ca(OH) 2 1.3 × 10 −6
CaCO 3 8.7 × 10 −9
CaSO4·2H 2 O 6.1 × 10 −5
CaC 2 O 4 ·H 2 O 1.96 × 10 −8
Ca 3 (PO 4 ) 2 1.3 × 10 −32
CaHPO 4 7 × 10 −7
CaF 2 4.0 × 10 −11
chromium
Cr(OH) 3 6.7 × 10 −31
cobalt
Co(OH) 2 2.5 × 10 −16
CoS( α ) 5 × 10 −22
CoS( β ) 3 × 10 −26
CoCO 3 1.4 × 10 −13
Co(OH) 3 2.5 × 10 −43
copper
CuCl 1.2 × 10 −6
CuBr 6.27 × 10 −9
CuI 1.27 × 10 −12
CuSCN 1.6 × 10 −11
Cu 2 S 2.5 × 10 −48
Cu(OH) 2 2.2 × 10 −20
CuS 8.5 × 10 −45
CuCO 3 2.5 × 10 −10
iron
Fe(OH) 2 1.8 × 10 −15
FeCO 3 2.1 × 10 −11
FeS 3.7 × 10 −19
Fe(OH) 3 4 × 10 −38
lead
Pb(OH) 2 1.2 × 10 −15
PbF 2 4 × 10 −8
PbCl 2 1.6 × 10 −5
PbBr 2 4.6 × 10 −6
PbI 2 1.4 × 10 −8
PbCO 3 1.5 × 10 −15
PbS 7 × 10 −29
PbCrO 4 2 × 10 −16
PbSO 4 1.3 × 10 −8
Pb 3 (PO 4 ) 2 1 × 10 −54
magnesium
Mg(OH) 2 8.9 × 10 −12
MgCO 3 ·3H 2 O ca 1 × 10 −5
MgNH 4 PO 4 3 × 10 −13
MgF 2 6.4 × 10 −9
MgC 2 O 4 7 × 10 −7
manganese
Mn(OH) 2 2 × 10 −13
MnCO 3 8.8 × 10 −11
MnS 2.3 × 10 −13
mercury
Hg 2 O·H 2 O 3.6 × 10 −26
Hg 2 Cl 2 1.1 × 10 −18
Hg 2 Br 2 1.3 × 10 −22
Hg 2 I 2 4.5 × 10 −29
Hg 2 CO 3 9 × 10 −15
Hg 2 SO 4 7.4 × 10 −7
Hg 2 S 1.0 × 10 −47
Hg 2 CrO 4 2 × 10 −9
HgS 1.6 × 10 −54
nickel
Ni(OH) 2 1.6 × 10 −16
NiCO 3 1.4 × 10 −7
NiS( α ) 4 × 10 −20
NiS( β ) 1.3 × 10 −25
potassium
KClO 4 1.05 × 10 −2
K 2 PtCl 6 7.48 × 10 −6
KHC 4 H 4 O 6 3 × 10 −4
silver
2 1 A g 2 O ( Ag + + OH ) 2 × 10 −8
AgCl 1.6 × 10 −10
AgBr 5.0 × 10 −13
AgI 1.5 × 10 −16
AgCN 1.2 × 10 −16
AgSCN 1.0 × 10 −12
Ag 2 S 1.6 × 10 −49
Ag 2 CO 3 8.1 × 10 −12
Ag 2 CrO 4 9.0 × 10 −12
Ag 4 Fe(CN) 6 1.55 × 10 −41
Ag 2 SO 4 1.2 × 10 −5
Ag 3 PO 4 1.8 × 10 −18
strontium
Sr(OH) 2 ·8H 2 O 3.2 × 10 −4
SrCO 3 7 × 10 −10
SrCrO 4 3.6 × 10 −5
SrSO 4 3.2 × 10 −7
SrC 2 O 4 ·H 2 O 4 × 10 −7
thallium
TlCl 1.7 × 10 −4
TlSCN 1.6 × 10 −4
Tl 2 S 6 × 10 −22
Tl(OH) 3 6.3 × 10 −46
tin
Sn(OH) 2 3 × 10 −27
SnS 1 × 10 −26
Sn(OH) 4 1.0 × 10 −57
zinc
ZnCO 3 2 × 10 −10

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Source:  OpenStax, Chemistry. OpenStax CNX. May 20, 2015 Download for free at http://legacy.cnx.org/content/col11760/1.9
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