If the pH of a solution is 9, what are the hydrogen ion and hydroxide ion concentrations?
pH = -log(H^+)
9 = -log(H^+).
Solve for (H^+).
Then for OH^-.
(H^+)(OH^-) = Kw = 1E-14
9 = -log(H^+).
Solve for (H^+).
Then for OH^-.
(H^+)(OH^-) = Kw = 1E-14