Calculate the pH of a solution whose H3O+ concentration is 1.5 x 10-13M. Is the solution acidic, basic, or neutral?
pH = -log[H3O+]
pH = -log(1.5 x 10^-13)
pH = -(-12.824)
pH = 12.824
The pH of the solution is 12.824.
Since pH is greater than 7, the solution is basic.