Question

Calculate the concentration of H+(aq) and the concentration of OH-(aq) for the following solution with the following pH at 298K showing all your working.

pH = 3.20

Answer 1

pH = -log(H^+)

3.20 = -log(H^+)
(H^+) = ?
Then (H^+)(OH^-) = Kw = 1E-14
You know H^+ and Kw, solve for OH^-