弱酸，弱碱的电离常数(室温

弱酸，弱碱的电离常数(室温)弱酸　　名称化学式Ka﹙b﹚（酸离解常数）H+浓度pKa（b）硼酸H?BO?5.8×10?-10（Ka1）9.24碳酸H?CO?4.5X10?﹣7(Ka1)4.7X10?-11(Ka2)6.3510.33砷酸H?AsO?6.3X10?-3(Ka1)0X10?-7(Ka2)3.2X10?-12(Ka3)2.207.0011.5亚砷酸HAsO?6.0X10^-109.22氢氰酸HCN6.2X10^-109.21铬酸HCrO?­?3.2X10^-7(Ka2)6.50氢氟酸HF7.2X10^-43.14亚硝酸HNO?5.1X10^-43.29磷酸H?PO?7.6X10^-3(Ka1)6.3X10^-8(Ka2)4.4X10^-13(Ka3)2.127.2012.36　　弱碱名称化学式Ka（b）（酸离解常数）H+浓度pKa（b）氨水NH?·H?O8X10^-54.74联氨H?NNH?3.0X10^-6(Kb1)7.6X10^-15(Kb2)5.5214.12苯胺C6H5NH?4.2X10^-109.38羟胺NH?OH9.1X10^-98.04甲胺CH?NH?4.2X10^-43.38乙胺C?H5NH?5.6X10^-93.25