The indicator phenolphthalein is used in this lab and, Ask an Expert

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The indicator phenolphthalein is used in this lab and changes from colorless to red at pH around 9 when a base is titrated with an acid.
a.) What is the equivalence point of HCl and NaOHtitration?

b.) What is the equivalence point of the acetic acid and NaOHtitration?

c.) Why do we use phenolphthalein?

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