Question

Write observation (changes) when the following reaction takes place-(also support

your answer with chemical equation)


(b) Phenolphthalein indicator is added to sodium hydroxide solution​

Answer 1

Answer:

In alkaline solution, phenolphthalein gives pink colour as it works as an indicator which shows its endpoint when it reacts with hydroxide ions of the base. It is a commonly used indicator in acid-base titrations. In acidic solution when acid is added, phenolphthalein gives a colourless solution.

Explanation:

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