pH of Orthophosphoric Acid

Chemical formula: H₃PO₄

0.1N

100 mM

10 mM

1 mM

Orthophosphoric Acid is Strongly Acidic

At concentration of 1 mM, it has a pH of 3.06
At concentration of 10 mM, it has a pH of 2.26
At concentration of 100 mM, it has a pH of 1.63
At concentration of 0.1N, it has a pH of 1.5

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