Textbook Problem

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

a. $\left[{\text{OH}}^{\text{+}}\right]=4.73\times {10}^{-4}M$b. $\left[{\text{OH}}^{\text{+}}\right]=5.99\times {10}^{-1}M$

c. $\left[{\text{OH}}^{\text{+}}\right]=2.87\times {10}^{-8}M$d. $\left[{\text{OH}}^{\text{+}}\right]=6.39\times {10}^{-3}M$