ตารางค่าคงที่การแตกตัวของกรดอ่อน
ตารางค่าคงที่การแตกตัวของกรดอ่อน
เรียงตามค่า Ka จากมากไปน้อย
| ชื่อสาร |
สูตรโมเลกุล |
ปฎิกิริยาเคมี |
Ka |
|---|
| Hydroiodic | HI | HI(aq) + H2O(l) ⇋ H3O+(aq) + I-(aq) | ~1011 |
| Hydrobromic | HBr | HBr(aq) + H2O(l) ⇋ H3O+(aq) + Br-(aq) | ~109 |
| Perchloric | HClO4 | HClO4(aq) + H2O(l) ⇋ H3O+(aq) + ClO4-(aq) | ~107 |
| Hydrochloric | HCl | HCl(aq) + H2O(l) ⇋ H3O+(aq) + Cl- | ~107 |
| chloric | HClO4 | HClO3(aq) + H2O(l) ⇋ H3O+(aq) + ClO3-(aq) | ~103 |
| Sulfuric | H2SO4 | H2SO4(aq) + H2O(l) ⇋ H3O+(aq) + HSO4- | ~102 |
| Nitric | HNO3 | HNO3(aq) + H2O(l) ⇋ H3O+(aq) + NO3-(aq) | ~20 |
| Hydronium ion | H3O+ | H3O+(aq) + H2O(l) ⇋ H3O+(aq) + H2O(aq) | 1 |
| Iodic | HIO3 | HIO3(aq) + H2O(l) ⇋ H3O+(aq) + IO3-(aq) | 1.6x10-1 |
| Oxalic | H2C2O4 | H2C2O4(aq) + H2O(l) ⇋ H3O+(aq) + HC2O4(aq) | 5.9x10-2 |
| Sulfurous | H2SO3 | H2SO3(aq) + H2O(l) ⇋ H3O+(aq) + HSO3-(aq) | 1.54x10-2 |
| Sulfuric | HSO4- | HSO4-(aq) + H2O(l) ⇋ H3O+(aq) + SO42-(aq) | 1.2x10-2 |
| Chlorous | HClO2 | HClO2(aq) + H2O(l) ⇋ H3O+(aq) + ClO2- | 1.1x10-2 |
| Phosphoric | H3PO4 | H3PO4(aq) + H2O(l) ⇋ H3O+(aq) + H2PO4- | 7.52x10-3 |
| Arsenic | H3AsO4 | H3AsO4(aq) + H2O(l) ⇋ H3O+(aq) + H2AsO4(aq) | 5.0x10-3 |
| Chloroacetic | CH2ClCOOH | CH2ClCOOH(aq) + H2O(l) ⇋ H3O+(aq) + CH2ClCOO-(aq) | 1.4x10-3 |
| Hydrofluoric | HF | HF(aq) + H2O(l) ⇋ H3O+(aq) + F-(aq) | 6.6x10-4 |
| Nitrous | HNO2 | HNO2(aq) + H2O(l) ⇋ H3O+(aq) + NO2-(aq) | 4.6x10-4 |
| Fromic | HCOOH | HCOOH(aq) + H2O(l) ⇋ H3O+(aq) + HCOO-(aq) | 1.77x10-4 |
| Benzoic | C6H5COOH | C6H5COOH(aq) + H2O(l) ⇋ H3O+(aq) + C6H5COO-(aq) | 6.46x10-5 |
| Oxalic | HC2O4- | HC2O4-(l) ⇋ H3O+(aq) + C2O42-(aq) | 6.4x10-5 |
| Hydrazoic | HN3 | HN3(aq) + H2O(l) ⇋ H3O+(aq) + N3-(aq) | 1.9x10-4 |
| Acetic acid | HC2H3O2 | HC2H3O2(aq) + H2O(l) ⇋ H3O+(aq) + HC2H3O2-(aq) | 1.76x10-5 |
| Propionic | HC3CH2COOH | HC3CH2COOH(aq) + H2O(l) ⇋ H3O+(aq) + HC3CH2COO- | 1.34x10-5 |
| Pyridinium ion | HC5H5N+ | HC5H5N+(aq) + H2O(l) ⇋ H3O+(aq) + HC5H5N(aq) | 5.6x10-6 |
| Carbonic | H2CO3 | H2CO3(aq) + H2O(l) ⇋ H3O+(aq) + HCO3(aq) | 4.3x10-7 |
| Sulfurous (2) | HSO3- | HSO3-(aq) + H2O(l) ⇋ H3O+(aq) + SO32-(aq) | 1.02x10-7 |
| ArSenic (2) | H2AsO4- | H2AsO4-(aq) + H2O(l) ⇋ H3O+(aq) + HAsO42-(aq) | 9.3x10-8 |
| Hydrosulfuric | H2S | H2S(aq) + H2O(l) ⇋ H3O+(aq) + HS-(aq) | 9.1x10-8 |
| Phosphoric (2) | H2PO4- | H2PO4-(aq) + H2O(l) ⇋ H3O+(aq) + HPO42-(aq) | 6.23x10-8 |
| Hypochlorous | HClO | HClO(aq) + H2O(l) ⇋ H3O+(aq) + ClO- | 3.0x10-8 |
| Hydrocyanic | HCN | HCN(aq) + H2O(l) ⇋ H3O+(aq) + CN- | 6.17x10-10 |
| Ammoniun ion | NH4+ | NH4+(aq) + H2O(l) ⇋ H3O+(aq) + NH3(aq) | 5.6x10-10 |
| Carbonic (2) | HCO3- | HCO3-(aq) + H2O(l) ⇋ H3O+(aq) + CO32-(aq) | 4.8x10-11 |
| Arsenic (3) | HAsO42- | HAsO42-(aq) + H2O(l) ⇋ H3O+(aq) + AsO43-(aq) | 3.0x10-12 |
| Hydrogen peroxide | H2O2 | H2O2(aq) + H2O(l) ⇋ H3O+(aq) + HO2-(aq) | 2.4x10-12 |
| Phosphoric (3) | HPO42- | HPO42-(aq) + H2O(l) ⇋ H3O+(aq) + PO43-(aq) | 2.2x10-13 |