Table of Acids with Ka and pKa Values*
Class Conjugate Base Acid Strength Strength
Acid
pKa
Hydroiodic Hydrobromic Perchloric Hydrochloric Chloric Sulfuric Nitric Hydronium ion Oxalic Sulfurous Sulfuric Chlorous Phosphoric Arsenic Chloroacetic Citric Hydrofluoric Arous
HI HBr HClO4 HCl HClO H2SO4 HNO3 H3O+ HCOOH H2SO3 H2SO4 HClO2 H3PO4 H3AsO3 CH2ClCOOH C6H8O7 HF H3AsO4
-9 -7 -3 -1 0 2 3 4 5 7 9 10 12
Hydroiodic acid
Hydrobromic acid
Perchloric acid
Hydrochloric acid
Chloric acid
Sulfuric acid
Nitric acid
Hydronium ion
Oxalic acid
Sulfurous acid
Sulfuric acid
Chlorous acid
Phosphoric acid
Arsenic acid
Chloroacetic acid
Citric acid
Hydrofluoric acid
Arsenic acid