Calculate the pH of a 0.10 M solution of barium hydroxide, Ba(OH)2.
Barium hydroxide, $BaOH_2$, is a strong base. Remember that when we have a strong acid or strong base, we do not need an ICE chart to find the pH. All that needs to be done is take the –log to find either pH or pOH. Because we are dealing with a strong base, we will find pOH first.
One tricky thing about strong bases is that we need to find the correct concentration. We must count the number of moles of $OH^-$ to make sure we find the correct pH in the end. Notice the dissociation: