Acid-Base Indicators Change Color ________

question 63

Multiple Choice

Acid-base indicators change color ________

• A) exactly when pH = pK_a of the indicator.
• B) generally over a range of 1 or 2 pH units.
• C) at pH = 7.
• D) always between a pH of 6 and 8.
• E) at the midpoint of a titration.

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