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 Sodium Carbonate
Chemical formula: Na2CO3
Also known as: Soda ash, Washing soda, Soda crystals
Sodium Carbonate is Basic
At concentration of 1 mM, it has a pH of 10.52
At concentration of 10 mM, it has a pH of 10.97
At concentration of 100 mM, it has a pH of 11.26
At concentration of 0.1N, it has a pH of 11.6