Which Indicator Is Most Appropriate for the Titration of Acetic

question 41

Multiple Choice

Which indicator is most appropriate for the titration of acetic acid with NaOH? The K_a for CH₃CO₂H is 1.8 × 10−⁵.

• A) methyl red (pH 5)
• B) bromthymol blue (pH 7)
• C) phenolphthalein (pH 9)
• D) Both methyl red and bromthymol blue are suitable.
• E) All three indicators are suitable.

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