This little website shows you the pH of various acids, bases, food products, bodily fluids, cleaners, and more!

Here's a random substance:

pH of Selenous Acid

Chemical formula: H₂SeO₃

100 mM

10 mM

1 mM

Selenous Acid is Strongly Acidic

At concentration of 1 mM, it has a pH of 3.15
At concentration of 10 mM, it has a pH of 2.47
At concentration of 100 mM, it has a pH of 1.9

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