What is the pH of a solution whose H_3O^+ concentration is 1*10^-9?

1 Answer
Mar 24, 2018

9

Explanation:

pH of an acid is given by -log[H_3O]

Where [H_3O] is concentration of [H_3O] ions

So, pH is -log(10^-9)

=-(-9)

=9

Note: The logarithm is to the base 10.