When a strong acid is titrated with a strong base using phenolphthalein as an indicator, the color c — Acids and Bases Chemistry Question
Question
When a strong acid is titrated with a strong base using phenolphthalein as an indicator, the color changes abruptly at the endpoint of the titration and can be switched back and forth by the addition of only one drop of acid or base. The reason for the abruptness of this color change is that
A.✓ Correct
a large change in pH occurs near the endpoint of the titration
B.
a buffer solution exists at the endpoint of the titration
C.
phenolphthalein is a strong proton donor
D.
the pH of water is very resistant to change
E.
phenolphthalein is much more sensitive to the pH of a solution than most other indicators
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