MDCAT Chemistry MCQ #2243

In the titration of CH3COOH with NaOH, phenolphthalein is a better indicator than methyl orange. This is because:

MDCAT Chemistry MCQ #2243

  1. Question 1

    Q1. In the titration of CH3COOH with NaOH, phenolphthalein is a better indicator than methyl orange. This is because:

    • A) The equivalence point pH is greater than 7
    • B) The equivalence point pH is exactly 7
    • C) Methyl orange is only used for organic acids
    • D) Phenolphthalein reacts chemically with the weak acid

    Answer: The equivalence point pH is greater than 7

    Explanation: Phenolphthalein changes color in the basic range (8.3-10), making it suitable for weak acid-strong base titrations where the equivalence point is basic.