Chemistry Resources at BPC: Table of Ka Values for Common Monoprotic Acids

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Table of K_a Values for Common Monoprotic Acids

Name	Formula	K_a
Hydrogen sulfate ion	HSO₄^–	1.2 x 10^–²
Hydrofluoric acid	HF	7.2 x 10^–⁴
Nitrous acid	HNO₂	4.0 x 10^–⁴
Formic acid	HCHO₂	1.8 x 10^–⁴
Lactic acid	HC₃H₅O₃	1.4 x 10^–⁴
Benzoic acid	HC₇H₅O₂	6.4 x 10^–⁵
Hydrazidic acid	HN₃	1.9 x 10^–⁵
Acetic acid	HC₂H₃O₂	1.8 x 10^–⁵
Propanoic acid	HC₃H₅O₂	1.3 x 10^–⁵
Hypochlorous acid	HOCl	3.5 x 10^–8
Hydrocyanic acid	HCN	6.2 x 10^–10
Phenol	HOC₆H₅	1.6 x 10^–10

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Updated on: July 7, 2008 1:58 AM