Question

Observation of addition of sodium hydroxide to dilute hydrochloric acid​

Answer 1

Answer:

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Answer 2

Answer:

ANSWER

Explanation:

On adding nearly 5 mL sodium hydroxide solution to the mixture of hydrochloric acid and phenolphthalein solution, the colour of the mixture changes to pink. On addition of hydrochloric acid solution to the pink solution, the colour starts fading gradually and finally the solution becomes colourl

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