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pH, hydrogen ion concentration Calculator
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pH calculation formula:
pH = -log(1/H+)
Where:
H+: Hydrogen ion concentration in the solution
pKa Table of Amino Acids
| Name |
pKa |
Formula |
| acetic acid |
0.0000175 |
CH3COOH |
| arsenic acid |
0.006 |
Ar2O3 |
| arsenious acid |
0.0000000006 |
As2O3 |
| benzoic acid |
0.000063 |
C7H6O2 |
| boric acid |
0.00000000064 |
H3BO3 |
| carbonic acid |
0.00000043 |
H2CO3 |
| citric acid |
0.00074 |
C6H8O7 |
| formic acid |
0.000176 |
CH2O2 |
| hydrocyanic acid |
0.00000000072 |
HCN |
| hydrofluoric acid |
0.00067 |
HF |
| hydrosulfuric acid |
0.000000091 |
H2S |
| hydrochloric acid |
1.0 |
HCl |
| hypochlorous acid |
0.000000011 |
HClO |
| perchloric acid |
1.0 |
HClO4 |
| chlorous acid |
0.012 |
HClO2 |
| sulfuric acid |
1.0 |
H2SO4 |
| sulfurous acid |
0.013 |
H2SO3 |
| nitric acid |
1.0 |
HNO3 |
| nitrous acid |
0.00051 |
HNO2 |
| phenol acid |
0.00000000011 |
C6H6O |
| phenol |
0.00000000011 |
C6H6O |
| phosphoric acid |
0.011 |
H3PO4 |
| phosphorous acid |
0.05 |
H3PO3 |
| sodium hydroxide |
1.0 |
NaOH |
| aniline |
0.0000000004 |
C6H5-NH2 |
| ammonia |
0.0000175 |
NH3 |
