How is phenolphthalein employed in titration?


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.
Q&A Related to "How is phenolphthalein employed in titration?"
The pH curve for the strong acid - weak base titration
It is used as an indicator to find the equilibrium point in a titration.
Phenolphthalein is a weak acid. The weak acid is colourless and its ion is bright pink. Adding extra hydrogen ions shifts the position of equilibrium to the left, and turns the indicator
You are reacting a strong base with a weak acid. The resulting salt will be basic in character, Therefore it is necessary to have an indicator that changes colour in the basic pH
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