弱酸弱碱电离常数

1、3、弱酸弱碱在水中的离解常数（25 C、1=0）弱酸分子式KapKa6.3 X10 - (Kai)2.20砷酸H 3AsO 41.0 X10 - ( Ka2 )7.003.2 X10 -2 ( Ka3)11.50亚砷酸HAsO 26.0 X10 -09.22硼酸H3BO35.8 X10 -09.241.0 X10 - 4 ( Ka1 )4焦硼酸H2B4O71.0 X10 - ( Ka2 )94.2 X10 - ( Ka1 )6.38碳酸H2CO3(CO2 + H2O)5.6 X10 -1 ( Ka2)10.25氢氰酸HCN6.2 X10 -09.211.8 X10 - ( Ka1 )0.74铬

2、酸H2CQ43.2 X10 - ( Ka2 )6.50氢氟酸HF6.6 X10 -3.18亚硝酸HNO25.1 X10 -3.29过氧化氢H2O21.8 X10 -211.75磷酸H3PO47.6 X10 - ( >Ka1 )2.12焦磷酸H4P2O7亚磷酸H3PO3氢硫酸H2S硫酸HSO4-亚硫酸H3SO3(SO2 + H2O)偏硅酸H2SQ3甲酸HCOOH乙酸CH3COOH一氯乙酸CH2CICOOH6.3 X10 - ( Ka2 )7.24.4 X10 -3 ( Ka3)12.363.0 X10 - (Kai)1.524.4 X10 - (Ka2)2.362.5 X10 - ( Ka

3、3 )6.605.6 X10 -0 ( Ka4)9.255.0 X10 - ( Kai )1.302.5 X10 - ( Ka2 )6.601.3 X10 - (Ka1)6.887.1 X10 -5 ( Ka2)14.151.0 X10 - ( Ka1 )1.991.3 X10 - ( Ka1 )1.906.3 X10 - ( Ka2 )7.201.7 X10 -0 ( Ka1 )9.771.6 X10 -2 ( Ka2)11.81.8 X10 -3.741.8 X10 -4.741.4 X10 -2.86二氯乙酸CHCI2COOH5.0 X10 -1.30三氯乙酸CCI3COOH0.230.

4、64+NH3CH2COOH -4.5 X10 - (Kai)2.35氨基乙酸盐+NH3CH2COO -2.5 X10 -0 ( Ka2)9.60抗坏血酸-CHOH -CH2OH5.0 X10 - ( Kai )1.5 X10 -0 ( Ka2)4.309.82乳酸CH3CHOHCOOH1.4 X10 -3.86苯甲酸C6H5COOH6.2 X10 -4.21草酸H 2C2O45.9 X10 - (Ka1)6.4 X10 - ( Ka2 )1.224.19d 酒石酸CH(OH)COOHCH(OH)COOH9.1 X10 - (Ka1)4.3 X10 - (Ka2)3.044.37邻一苯二甲酸LL

5、coon1.1 X10 - ( Ka1>)3.9 X10 - (Ka2)2.955.41柠檬酸CH2COOHCH(OH)COOHCH2COOH7.4 X10 - ( Ka1 )1.7 X10 - ( Ka2 )4.0 X10 - ( Ka3 )3.134.766.40苯酚C6H5OH1.1 X10 -09.95H6 - EDTA2+0.1 ( Kai )0.9H5-EDTA +3 X10 -2( Ka2)1.6H4 - EDTA1 X10 - ( Ka3 )2.0乙二胺四乙酸H3-EDTA -2.1 X10 - 3 ( Ka4 )2.67H2- EDTA2-6.9 X10 - (Ka5)

6、6.17H - EDTA 3-5.5 X10 -1 ( Ka6)10.26氨水NH31.8 X10 -4.743.0 X10 - 6 ( Kb1)5.52联氨H2NNH21.7 X10 - (Kb2)14.12羟胺NH2OH9.1 X10 -8.04甲胺CH3NH24.2 X10 -3.38乙胺C2H5NH25.6 X10 -3.25二甲胺(CH 3)2NH1.2 X10 -3.93二乙胺(C2H5)2NH1.3 X10 -2.89乙醇胺HOCH 2CH2NH23.2 X10 -4.50三乙醇胺(HOCH 2CH2)3N5.8 X10 -6.24六次甲基四胺(CH 2)6N41.4 X10 -8.85乙二胺H2NHC2CH