Question

What is an indicator? Name an indicator which is pink in alkaline solution but turns colourless
in acidic solution.

Answer 1

Answer:

an indicator is a substance which changes colour in alkaline and acidic medium. phenolphthalein is that one indicator .

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Answer 2

A substance that can be added to the reaction mixture to indicate the equivalence point of the titration.

Phenolphthalein is an indicator which is pink in alkaline solution but turna colourless in acidic solution .

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