Question

To a solution of sodium hydroxide in a test tube, two drops of phenolphthalein are added.

i) State the colour change observed.

ii) If dilute hydrochloric acid is added drop wise the solution what will be the colour change?

iii) On adding few drops of NaOH solution to the above mixture the colour of the solution reappears.

Why?​

Answer 1

Answer:

1) pink

2) the solution will become colourless

3) the basic solution becomes neutral when we add hydrochloric acid.on adding few drops of NaOH to the mixture it becomes basic solution. Phenolphthalein gives pink colour to basic solutions

Explanation:

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