Barium hydroxide is an alkali. It reacts with hydrochloric acid.
How does the pH of the hydrochloric acid change as an excess of aqueous barium hydroxide is added?
1 )
The pH decreases from pH14 and becomes constant at pH7.
2 )
The pH decreases from pH14 to about pH1.
3 )
The pH increases from pH1 and becomes constant at pH7.
The pH increases from pH1 to about pH14.
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