Question

when we add few drops of acetic acid in a testube containing phenolpthalein distilled water and sodium hydrogen carbonate

Answer 1

When few drops of acetic acid are dropped in the, the following events will occur:

1. Phenolphthalein will show no change in colour.

2. Acetic acid will mix in distilled water, but no physical or chemical change is observed.

3. Acetic acid has pH range of 3-6, so colour change may be orange to yellow.

4.On adding to solution of Sodium Carbonate, Carbon dioxide will be liberated, due to following reaction:

     CH​3COOH (aq) + NaHCO3(aq) →CH3COONa(aq) + CO2 (g) + H2O (l)