弱酸弱碱电离常数

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1、3、 弱酸弱碱在水中的离解常数（25℃、I=0）弱酸分子式KapKa砷酸H3AsO46.3×10–3（Ka1）1.0×10–7（Ka2）3.2×10–12（Ka3）2.207.0011.50亚砷酸HAsO26.0×10–109.22硼酸H3BO35.8×10–109.24焦硼酸H2B4O71.0×10–4（Ka1）1.0×10–9（Ka2）49碳酸H2CO3(CO2+H2O)4.2×10–7（Ka1）5.6×10–11（Ka2）6.3810.25氢氰酸HCN6.2×10–109.21铬酸H2CrO41.8×10–1（Ka1）3.2×10–7（Ka2）0.

2、746.50氢氟酸HF6.6×10–43.18亚硝酸HNO25.1×10–43.29过氧化氢H2O21.8×10–1211.75磷酸H3PO47.6×10–3（>Ka1）6.3×10–3（Ka2）4.4×10–13（Ka3）2.127.212.36焦磷酸H4P2O73.0×10–2（Ka1）4.4×10–3（Ka2）2.5×10–7（Ka3）5.6×10–10（Ka4）1.522.366.609.25亚磷酸H3PO35.0×10–2（Ka1）2.5×10–7（Ka2）1.306.60氢硫酸H2S1.3×10–7（Ka1）7.1×10–15（Ka2）6.8

3、814.15硫酸HSO4–1.0×10–2（Ka1）1.99亚硫酸H3SO3(SO2+H2O)1.3×10–2（Ka1）6.3×10–8（Ka2）1.907.20偏硅酸H2SiO31.7×10–10（Ka1）1.6×10–12（Ka2）9.7711.8甲酸HCOOH1.8×10–43.74乙酸CH3COOH1.8×10–54.74一氯乙酸CH2ClCOOH1.4×10–32.86二氯乙酸CHCl2COOH5.0×10–21.30三氯乙酸CCl3COOH0.230.64氨基乙酸盐+NH3CH2COOH–+NH3CH2COO–4.5×10–3（Ka1）2.5

4、×10–10（Ka2）2.359.60抗坏血酸–CHOH–CH2OH5.0×10–5（Ka1）1.5×10–10（Ka2）4.309.82乳酸CH3CHOHCOOH1.4×10–43.86苯甲酸C6H5COOH6.2×10–54.21草酸H2C2O45.9×10–2（Ka1）6.4×10–5（Ka2）1.224.19d－酒石酸CH(OH)COOHCH(OH)COOH9.1×10–4（Ka1）4.3×10–5（Ka2）3.044.37邻－苯二甲酸1.1×10–3（Ka1>）3.9×10–6（Ka2）2.955.41柠檬酸CH2COOHCH(OH)COOHC

5、H2COOH7.4×10–4（Ka1）1.7×10–5（Ka2）4.0×10–7（Ka3）3.134.766.40苯酚C6H5OH1.1×10–109.95乙二胺四乙酸H6–EDTA2+H5–EDTA+H4–EDTAH3–EDTA–H2–EDTA2–H–EDTA3–0.1（Ka1）3×10–2（Ka2）1×10–2（Ka3）2.1×10–3（Ka4）6.9×10–7（Ka5）5.5×10–11（Ka6）0.91.62.02.676.1710.26氨水NH31.8×10–54.74联氨H2NNH23.0×10–6（Kb1）1.7×10–5（Kb2）5.52

6、14.12羟胺NH2OH9.1×10–68.04甲胺CH3NH24.2×10–43.38乙胺C2H5NH25.6×10–43.25二甲胺(CH3)2NH1.2×10–43.93二乙胺(C2H5)2NH1.3×10–32.89乙醇胺HOCH2CH2NH23.2×10–54.50三乙醇胺(HOCH2CH2)3N5.8×10–76.24六次甲基四胺(CH2)6N41.4×10–98.85乙二胺H2NHC2CH2NH28.5×10–5（Kb1）7.1×10–8（Kb2）4.077.15吡啶1.7×10–58.77