Barium hydroxide is an alkali that reacts with hydrochloric acid. What happens to the pH of the hydrochloric acid as excess aqueous barium hydroxide is added?
- AThe pH decreases from pH 14 and becomes constant at pH 7.
- BThe pH decreases from pH 14 to about pH 1.
- CThe pH increases from pH 1 and becomes constant at pH 7.
- DThe pH increases from pH 1 to about pH 14.