弱酸弱碱电离常数.doc

_3、弱酸弱碱在水中的离解常数（25、I=0）弱酸分子式KapKa砷酸H3AsO46.3103（Ka1）1.0107（Ka2）3.21012（Ka3）2.207.0011.50亚砷酸HAsO26.010109.22 硼酸H3BO35.810109.24焦硼酸H2B4O71.010 4（Ka1）1.0109（Ka2）49碳酸H2CO3(CO2+H2O)4.2107（Ka1）5.61011（Ka2）6.3810.25氢氰酸HCN6.210109.21铬酸H2CrO41.8101（Ka1）3.2107（Ka2）0.746.50氢氟酸HF6.61043.18亚硝酸HNO25.11043.29过氧化氢H2O21.8101211.75磷酸H3PO47.6103（Ka1）6.3103（Ka2）4.41013（Ka3）2.127.212.36焦磷酸H4P2O73.0102（Ka1）4.4103（Ka2）2.5107（Ka3）5.61010（Ka4）1.522.366.609.25亚磷酸H3PO35.0102（Ka1）2.5107（Ka2）1.306.60氢硫酸H2S1.3107（Ka1）7.11015（Ka2）6.8814.15硫酸HSO41.0102（Ka1）1.99亚硫酸H3SO3(SO2+H2O)1.3102（Ka1）6.3108（Ka2）1.907.20偏硅酸H2SiO31.71010（Ka1）1.61012（Ka2）9.7711.8甲酸HCOOH1.81043.74乙酸CH3COOH1.81054.74一氯乙酸CH2ClCOOH1.41032.86二氯乙酸CHCl2COOH5.01021.30三氯乙酸CCl3COOH0.230.64氨基乙酸盐+NH3CH2COOH+NH3CH2COO4.5103（Ka1）2.51010（Ka2）2.359.60抗坏血酸 CHOH CH2OH5.0105（Ka1）1.51010（Ka2）4.309.82乳酸CH3CHOHCOOH1.4104 3.86苯甲酸C6H5COOH6.21054.21草酸H2C2O45.9102（Ka1）6.4105（Ka2）1.224.19d酒石酸CH(OH)COOHCH(OH)COOH9.1104（Ka1）4.3105（Ka2）3.044.37邻苯二甲酸1.1103（Ka1）3.9106（Ka2）2.955.41柠檬酸CH2COOHCH(OH)COOHCH2COOH7.4104（Ka1）1.7105（Ka2）4.0107（Ka3）3.134.766.40苯酚C6H5OH1.110109.95乙二胺四乙酸H6 EDTA2+H5 EDTA+H4 EDTAH3 EDTAH2 EDTA2H EDTA30.1（Ka1）3102（Ka2）1102（Ka3）2.110 3（Ka4）6.9107（Ka5）5.51011（Ka6）0.91.62.02.676.1710.26氨水NH31.81054.74联氨H2NNH23.010 6（Kb1）1.7105（Kb2）5.5214.12羟胺NH2OH9.11068.04甲胺CH3NH24.21043.38乙胺C2H5NH25.61043.25二甲胺(CH3)2NH1.21043.93二乙胺(C2H5)2NH1.31032.89乙醇胺HOCH2CH2NH23.21054.50三乙醇胺(HOCH2CH2)3N5.81076.24六次甲基四胺(CH2)6N41.41098.85乙二胺H2NHC2CH2NH28.51