What Is the Relationship Between the PK_a for an Acid-Base

question 26

Multiple Choice

What is the relationship between the pK_a for an acid-base indicator and the pH at which the indicator changes color?

• A) pH = K_a
• B) pH = pK_a
• C) pH = −log[pK_a]
• D) pH = −log[H⁺]
• E) [H⁺] = pK_a

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