Question

what do you observe when you drop a few drops of acetic acid to s test tube contain :i) phenolphthalein, ii) distilled water, iii) universal indicator, iv) Sodium hydrogen carbonate

Answer 1

in phenolphthalein if you drop a few drops of Acetic Acid the colour will change into colourless
In sodium hydrogen carbonate there will be evolution of co2 and in universal indicator its colour will change into yellow orange

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.