Chapter 9.5, Problem 9.21P

Calculate the value of ${\text{[H}}_{\text{3}}{\text{O}}^{\text{+}}\text{]}$ and ${\text{[H}}_{\text{3}}{\text{O}}^{\text{-}}\text{]}$ in each solution: $\text{(a) 0}\text{.001 M NaOH; (b) 0}\text{.001 M HCI; (c) 1}\text{.5 M HCI; (d) 0}\text{.30 M NaOH}\text{.}$