Pop Question No. 1.

If you make a solution of 10e-3 M HCl, the pH is 3.  If you make a
solution of 10e-5 M HCl, the pH is 5.  Since HCl is a strong acid,
the [H+] is equal to the [HCl].

What is the pH of a solution of HCl that has been diluted to a
final concentration of 10e-8 M?

Dr. Light