The solubility product Ksp for a salt is the product of the ion concentrations of the salt. For example, the ionization of the salt Li2CO3 in a solution is,
In the following table, the salts are grouped by the anions: carbonates, chromates, halides, hydroxides, oxalate, sulfates, and sulfides.
| Substance | T °C |
Ksp | Carbonates |
|---|---|---|
| CaCO3 | 25 | 5 × 10-9 |
| PbCO3 | 20 | 1.4 × 10-13 |
| Li2CO3 | 0 | 2 × 10-3 |
| NiCO3 | 25 | 1.2 × 10-7 | Chromates |
| PbCrO4 | 25 | 1.8× 10-14 |
| Ag2CrO4 | 25 | 1.1× 10-12 |
| SrCrO4 | 25 | 3.5× 10-5 | Halides: chlorides, bromides, iodides |
| CuI | 18 | 7 × 10-13 |
| PbBr2 | 20 | 9 × 10-6 |
| PbCl2 | 20 | 1.2 × 10-5 |
| HgI2 | 25 | 3 × 10-29 |
| Hg2Br2 | 25 | 6 × 10-23 |
| Hg2Cl2 | 25 | 1.4 × 10-18 |
| AgBr | 100 | 5 × 10-10 |
| AgCl | 10 | 4 × 10-11 |
| AgI | 25 | 9 × 10-17 | Hydroxides |
| Ca(OH)2 | 0 | 9 × 10-6 |
| Fe(OH)2 | 18 | 7 × 10-16 |
| Pb(OH)2 | 20 | 2 × 10-15 |
| Mn(OH)2 | 18 | 1.7 × 10-13 | Oxalates |
| CdC2O4 | 25 | 1.5× 10-8 |
| MgC2O4 | 25 | 8.5× 10-5 | Sulfates |
| BaSO4 | 25 | 1.1 × 10-10 |
| CaSO4 | 30 | 6 × 10-5 |
| Hg2SO4 | 25 | 7 × 10-7 |
| Ag2SO4 | 0 | 5 × 10-6 |
| SrSO4 | 0 | 4 × 10-7 | Sulfides |
| CdS | 18 | 4 × 10-30 |
| MnS | 18 | 3 × 10-14 |
| HgS | 18 | 1.5 × 10-53 |
| CuS | 18 | 2 × 10-37 |