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Chemistry, 03.12.2019 01:10 ultimatesaiyan

What is the purpose of adding phenolphthalein to your erlenmeyer flask prior to starting a titration?
a. the phenolphthalein acts as a color changing indicator to signal the endpoint of the reaction.
b. the phenolphthalein will change color once we have added the correct amount of base to our acid.
c. the phenolphthalein acts as an acid in the neutralization reaction.
d. the phenolphthalein acts as a base in the neutralization reaction.

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