PKA Values
Ethane
51
Ethylene
44
Ammonia
38
Hydrogen
35
Acetylene
25
Ethanol
15.9
Water
15.7
Bicarbonate Ion
10.33
Ammonium Ion
9.24
Carbonic Acid
6.36
Acedic Acid
4.76
Benzoic acid
4.19
Phosphoric Acid
2.1
Hydronium Ion
-1.74
Sulfuric Acid
-5.2
Hydrogen Chloride
-7
Hydrogen Bromide
-8
Hydrogen Iodide
-9