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Answer to Question #81494 in Other Biology for Rahma

Question #81494
How did you titrate acetic acid of unknown concentration in the lab?
Expert's answer
Indicator phenolphthalein was added to the flask with acid. The solution was transparent, as phenolphthalein is colorless under the acidic conditions. Then, sodium hydroxide, which is a strong base, was added by drops and the solution was mixed. When the solution changed color to pink, titration was stopped. The volume of used sodium hydroxide was recorded.

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