| Сопряженная пара: Кислота/Основание |
Константа кислотности KK |
| Ag+.H2O/AgOH | 1,02 .10–12 |
| Al3+.H2O/AlOH2+ | 9,55 .10–6 |
| B(OH)3.H2O/B4O72– | 7,85 .10–7 |
| B(OH)3.H2O/[B(OH)4]– | 5,75 .10–10 |
| Be2+.H2O/BeOH+ | 2,00 .10–6 |
| CH3COOH/CH3COO– | 1,74 .10–5 |
| Cd2+.H2O/CdOH+ | 2,40 .10–8 |
| Co2+.H2O/CoOH+ | 1,26 .10–9 |
| Cr3+.H2O/CrOH2+ | 1,12 .10–4 |
| Cu2+.H2O/CuOH+ | 4,57 .10–8 |
| Fe2+.H2O/FeOH+ | 1,82 .10–7 |
| Fe3+.H2O/FeOH2+ | 6,76 .10–3 |
| HBrO/BrO– | 2,06 .10–9 |
| HBrO3/BrO3– | 2,00 .10–1 |
| HCN/CN– | 4,93 .10–10 |
| HCO3–/CO32– | 4,68 .10–11 |
| H2CO3/HCO3– | 4,27 .10–7 |
| H2C2O4/HC2O4– | 6,46 .10–2 |
| HCOOH/HCOO– | 1,78 .10–4 |
| HClO/ClO– | 2,82 .10–8 |
| HClO2/ClO2– | 1,07 .10–2 |
| HF/F– | 6,67 .10–4 |
| H2F2/HF2– | 2,63 .10–3 |
| HIO3/IO3– | 1,69 .10–1 |
| HN3/N3– | 1,90 .10–5 |
| HNO2/NO2– | 5,13 .10–4 |
| H2O2/HO2– | 2,38 .10–12 |
| HPO42–/PO43– | 4,57 .10–13 |
| H2PO4–/HPO42– | 6,17 .10–8 |
| H3PO4/H2PO4– | 7,24 .10–3 |
| H(PH2O2)/PH2O2– | 7,94 .10–2 |
| H2(PHO3)/H(PHO3)– | 1,00 .10–2 |
| HS–/S2– | 1,23 .10–13 |
| H2S/HS– | 1,05 .10–7 |
| HSO3–/SO32– | 6,31 .10–8 |
| HSe–/Se2– | 1,00 .10–11 |
| H2Se/HSe– | 1,55 .10–4 |
| HSeO3–/SeO32– | 4,79 .10–9 |
| H2SeO3/HSeO3– | 2,45 .10–3 |
| H4SiO4/H3SiO4– | 1,58 .10–10 |
| HTe–/Te2– | 6,76 .10–13 |
| H2Te/HTe– | 2,29 .10–3 |
| Hg2+.H2O/HgOH+ | 2,63 .10–4 |
| Mg2+.H2O/MgOH+ | 3,80 .10–12 |
| Mn2+.H2O/MnOH+ | 2,57 .10–11 |
| NH4+/NH3.H2O | 5,75 .10–10 |
| N2H5+/N2H4.H2O | 5,89 .10–9 |
| NH3OH+/NH2OH.H2O | 9,35 .10–7 |
| Ni2+.H2O/NiOH+ | 1,20 .10–11 |
| Pb2+.H2O/PbOH+ | 7,08 .10–7 |
| SO2.H2O/HSO3– | 1,66 .10–2 |
| Sn2+.H2O/SnOH+ | 7,94 .10–3 |
| Zn2+.H2O/ZnOH+ | 2,04 .10–8 |