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 Citric Acid

Chemical formula: C₆H₈O₇

100 mM

10 mM

1 mM

Citric Acid is Strongly Acidic

At concentration of 1 mM, it has a pH of 3.24
At concentration of 10 mM, it has a pH of 2.62
At concentration of 100 mM, it has a pH of 2.08

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