Question

What do you observe when few drops of
Sodium Hydroride (NaOH) Solution is added to
three test tubes e containing red litmus,
distill water and phenolphthalein.
​

Answer 1

red litmus turns to blue

distilled water will dilute NaOH

phenolphthalein will turn colourless to pink

Answer 2

red. litmus paper turn blue

and blue litmus paper turn red

in distillwater.

and change to colour red light pink