A. more [tex]OH^{-}[/tex] ions than [tex]H^{+}[/tex] ions.
What is pH?
- pH is a measure of how acidic/basic water is. The range goes from 0 - 14, with 7 being neutral.
- pH's of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base.
- pH is really a measure of the relative amount of free hydrogen and hydroxyl ions in the water.
Since, pH=9 it means a solution is basic and basic solution has more [tex]OH^{-}[/tex] ions than [tex]H^{+}[/tex].
Thus, option A is correct.
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