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Chemistry 2e · Front matter

Solubility Products

CC BY 4.0 · OpenStax · approximately 3 min read

Learning objectives

Solubility Products
Substance Ksp at 25 °C
aluminum
Al(OH)3 2 × 10−32
barium
BaCO3 1.6 × 10−9
BaC2O4·2H2O 1.1 × 10−7
BaSO4 2.3 × 10−8
BaCrO4 8.5 × 10−11
BaF2 2.4 × 10−5
Ba(OH)2·8H2O 5.0 × 10−3
Ba3(PO4)2 6 × 10−39
Ba3(AsO4)2 1.1 × 10−13
bismuth
BiO(OH) 4 × 10−10
BiOCl 1.8 × 10−31
Bi2S3 1 × 10−97
cadmium
Cd(OH)2 5.9 × 10−15
CdS 1.0 × 10−28
CdCO3 5.2 × 10−12
calcium
Ca(OH)2 1.3 × 10−6
CaCO3 8.7 × 10−9
CaSO4·2H2O 6.1 × 10−5
CaC2O4·H2O 1.96 × 10−9
Ca3(PO4)2 1.3 × 10−32
CaHPO4 7 × 10−7
CaF2 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
CoCO3 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
Cu2S 2.5 × 10−48
Cu(OH)2 2.2 × 10−20
CuS 8.5 × 10−45
CuCO3 2.5 × 10−10
iron
Fe(OH)2 1.8 × 10−15
FeCO3 2.1 × 10−11
FeS 3.7 × 10−19
Fe(OH)3 4 × 10−38
lead
Pb(OH)2 1.2 × 10−15
PbF2 4 × 10−8
PbCl2 1.6 × 10−5
PbBr2 4.6 × 10−6
PbI2 1.4 × 10−8
PbCO3 1.5 × 10−15
PbS 7 × 10−29
PbCrO4 2 × 10−16
PbSO4 1.3 × 10−8
Pb3(PO4)2 1 × 10−54
magnesium
Mg(OH)2 8.9 × 10−12
MgCO3·3H2O ca 1 × 10−5
MgNH4PO4 3 × 10−13
MgF2 6.4 × 10−9
MgC2O4 7 × 10−7
manganese
Mn(OH)2 2 × 10−13
MnCO3 8.8 × 10−11
MnS 2.3 × 10−13
mercury
Hg2O·H2O 3.6 × 10−26
Hg2Cl2 1.1 × 10−18
Hg2Br2 1.3 × 10−22
Hg2I2 4.5 × 10−29
Hg2CO3 9 × 10−15
Hg2SO4 7.4 × 10−7
Hg2S 1.0 × 10−47
Hg2CrO4 2 × 10−9
HgS 1.6 × 10−54
nickel
Ni(OH)2 1.6 × 10−16
NiCO3 1.4 × 10−7
NiS(α) 4 × 10−20
NiS(β) 1.3 × 10−25
potassium
KClO4 1.05 × 10−2
K2PtCl6 7.48 × 10−6
KHC4H4O6 3 × 10−4
silver
21Ag2O(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
Ag2S 1.6 × 10−49
Ag2CO3 8.1 × 10−12
Ag2CrO4 9.0 × 10−12
Ag4Fe(CN)6 1.55 × 10−41
Ag2SO4 1.2 × 10−5
Ag3PO4 1.8 × 10−18
strontium
Sr(OH)2·8H2O 3.2 × 10−4
SrCO3 7 × 10−10
SrCrO4 3.6 × 10−5
SrSO4 3.2 × 10−7
SrC2O4·H2O 4 × 10−7
thallium
TlCl 1.7 × 10−4
TlSCN 1.6 × 10−4
Tl2S 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
ZnCO3 2 × 10−10
← Ionization Constants of Weak BasesFormation Constants for Complex Ions →

Attribution. Chemistry 2e, OpenStax, Rice University, and the contributing authors credited in the book. Licensed under Creative Commons Attribution 4.0 International. Source revision 32c719622f of openstax/osbooks-chemistry-bundle (2026-02-04). CC BY 4.0. Original source ↗. Text edition of a pinned CC BY 4.0 source revision of the OpenStax book, converted from CNXML by the EvidenceHelix importer. Original prose, learning objectives, tables, exercises, glossary and captions are preserved; images are not copied (figures link to the original source and keep their credits). No new content was added. Later revisions of this book can carry different licence terms and are not used.

In this chapter Contents

  • Preface
  • The Periodic Table
  • Essential Mathematics
  • Units and Conversion Factors
  • Fundamental Physical Constants
  • Water Properties
  • Composition of Commercial Acids and Bases
  • Standard Thermodynamic Properties for Selected Substances
  • Ionization Constants of Weak Acids
  • Ionization Constants of Weak Bases
  • Solubility Products
  • Formation Constants for Complex Ions
  • Standard Electrode (Half-Cell) Potentials
  • Half-Lives for Several Radioactive Isotopes

Source

OpenStax source file ↗

Illustrated original ↗

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