How is phenolphthalein employed in titration?

Answer

Titration is a technique used to find out how much of a chemical substance is dissolved in a volume of solution. Phenolphthalein is one of the indicators. When it is an acid, it will turn to colorless and if it is base, it will turn into pink.
Reference:
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to determine the end point of titration.
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Universal indicator is a mixture of various indicators, typically phenolphthalein, methyl red, bromothymol blue, and thymol blue. Because Universal indicator exhibits a range of colours
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