In the titration setup, if you introduce 15 mL of the NaOH with an unknown molarity into the flask and then add 5 drops of phenolphthalein indicator, what will you observe?
Correct answer: A. A pinkish color will appear throughout the solution.
- A. A pinkish color will appear throughout the solution.
- B. A blue color will appear throughout the solution.
- C. There will be a temporary pinkish color that will dissipate.
- D. There will be a temporary blue color that will dissipate.
Explanation
Sodium hydroxide (NaOH) is a strong base. Phenolphthalein. indicator is colorless in acidic/neutral solutions but turns a distinct pink color in basic solutions (pH > 8.2). Therefore, adding it to NaOH will result in a pink solution.
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