When a few drops of phenolphthalein are added to a dilute solution of sodium hydroxide,
When a few drops of phenolphthalein are added to a dilute solution of sodium hydroxide, a pink colour is produced. What will be the colour of the final mixture when excess of HCl is added to it?
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When excess of HCl is added, the colour of the final mixture will be colourless because the pink colour of sodium hydroxide is neutralised with the acid.
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