What Are the Characteristics of a PH Indicator? a PH

question 7

Multiple Choice

What are the characteristics of a pH indicator? A pH indicator ________
I. is a weak acid.
II. has different characteristic colors in protonated and unprotonated forms.
III. changes color when the pH is near its pK_a.

• A)I only
• B)II only
• C)both II and III
• D)I, II, and III
• E)I and III

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