酸的强度排序

常见酸的酸性强弱排序强酸:HClO4（高氯酸）HI（碘化氢）HBr（氢溴酸）HCl（盐酸）HNO3（硝酸）H2SeO4（硒酸）H2SO4（硫酸）HClO39（氯酸）中强酸:H2C2O4(草酸）H2SO3（亚硫酸）H3PO4（磷酸或正磷酸）CH3COCOOH（丙酮酸）HNO2（亚硝酸）HF（氢氟酸）HCOOH（甲酸）弱酸:C3H6O3（乳酸）C6H5COOH(苯甲酸)CH2=CH-COOH(丙烯酸)CH3COOH（乙酸）C2H5COOH(丙酸)C17H33COOH(油酸)C17H35COOH（硬脂酸）H2CO3（碳酸）H2S（硫化氢，水溶液氢硫酸）HClO（次氯酸）H3BO3（硼酸）H2SiO3（硅酸）C6H5OH（苯酚）酸性常用该酸的标准溶液（I=0,温度25摄氏度，1标压，C=1.0mol/L)的PKa表示，即酸度常数。在弱酸中，应依照酸的解离常数来判断。（数值越小酸性越强）HIO30.31H2S2O30.6H4P2O70.7H2CrO40.74HSCN0.9H3PO21.23H3PO31.43H2SO31.91HClO21.95H3PO42.18H3AsO42.21HNO23.15HF3.17HCNO3.48H2CO36.35H2S7.02HClO7.53HBrO8.63HCN9.21H3BO39.24H3AsO39.29H2SiO39.77HIO10.64H2O211.65HAlO212.2