Question

What do you observe when you drop a few drops of acetic acid in a test- tube containing.

a) Phenolphthalein .

b) Distilled water

c) Universal indicator

d) Sodium hydrogen carbonate power.

Answer 1

i) Acetic acid will remain colourless in phenolphthalein.

ii) Acetic acid will dissolve in distilled water forming a clear solution.

iii) Universal indicator gives orange colour with acetic acid.

iv) Sodium hydrogen carbonate will give brisk effervescence due to the formation of CO2 gas.