What is the hydrogen ion concentration of a solution with pH=11.25 ?

Answer 1

Hello Lutumika!

The pH of a solution is the -log of the hydrogen ion concentration ([H⁺]).

Since we know that the pH = 11.25 and the that pH is the - log [H⁺]

From this we can solve:

pH = 11.25

11.25 = -log [H⁺]

-11.25 = log [H⁺]

10^-11.25 = [H⁺]

Therefore, the hydrogen ion concentration ([H⁺]) = 5.6 x10^-12 M (two significant figures due to log rules)

Hope this helps!