Question

Provided with sodium hydroxide,hydrochloric acid and phenolphthalein indicator describe how to prepare a dry sample
of sodium chloride

Answer 1

Answer:

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 colourless.