Question

What do you observe when you drop a few drops of acetic acid to a test tube containing :-
a) Phenolphthalein
b) distilled water
c) universal indicator
d) sodium hydrogen carbonate

Answer 1

a)Phenolphthalein will turn pink
b)Acetic acid will dissolve and water splits into $H^+$ and $OH^-$ions
c)universal indicator will turn reddish
d)formation of $CO_2$with water and formation of $CH_3COONa$

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.