Textbook Problem

. Calculate the pH corresponding to each of the following hydroxide ion concentrations, and indicate whether each solution is acidic or basic.

a. $\left[{\text{OH}}^{\text{-}}\right]=4.85\times {10}^{-5}M$b. $\left[{\text{OH}}^{\text{-}}\right]=3.96\times {10}^{-7}M$

c. $\left[{\text{OH}}^{-}\right]=1.22\times {10}^{-10}M$d. $\left[{\text{OH}}^{\text{-}}\right]=5.33\times {10}^{-12}M$