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 Hydrogen Carbonate
Chemical formula: NaHCO3
Also known as: Sodium bicarbonate, Baking soda, bicarb, bicarbonate of soda, nahcolite
Sodium Hydrogen Carbonate is Mildly Basic
At concentration of 1 mM, it has a pH of 8.27
At concentration of 10 mM, it has a pH of 8.22
At concentration of 100 mM, it has a pH of 8.02