Textbook Problem

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

a. $\left[{\text{OH}}^{\text{-}}\right]=1.4\times {10}^{-6}M$b. $\left[{\text{OH}}^{\text{-}}\right]=9.35\times {10}^{-9}M$c. $\left[{\text{OH}}^{\text{-}}\right]=2.21\times {10}^{-1}M$

d. $\left[{\text{OH}}^{\text{-}}\right]=7.98\times {10}^{-12}M$