Question

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

Answer 1

a. remains colourless.
b. becomes orange in colour.
c. forms clear solution.
d. gives brisk effervescence due to formation of CO2 gas.

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.