Question

What do you observe when you add a few drop of acetic acid to a test - tube containing: (1) phenolphthalein (2) distilledwater (3) universal indicator (4) sodium hydrogen carbonate powder ?

Answer 1

(1)Phenpolphthalein remains colourless
(2) The acid gets diluted
(3) The value is 2.9 in pH paper
(4) Carbon Dioxide is liberated

Answer 2

Answer:

When we add few drops of acetic acid to a test tube containing are as :

a ) . Phenolphthalein : Acetic acid will remain colourless in phenolphthalein

b ) . Distilled water : Acetic acid will dissolve in distilled water forming a clear solution

c ) . Universal indicator : It will give orange colour with acetic acid.

d ) . Sodium hydrogen carbonate : It will give brisk effervescence due to the

formation of CO₂ gas.