Question

PLEASE SOLVE QUESTION NO. 22

Answer 1

22. a) Phenolphthalein - When a few drops of acetic acid is added to a test tube containing phenolphthalein, it becomes colourless

b) Universal Indicator - When a few drops of acetic acid is added to universal indicator, it gives orange colour

c) Distilled water- When a few drops of acetic acid is added to distilled water, it dissolves in water

d) sodium hydrogen carbonate - When a few drops of acetic acid is added to sodium hydrogen carbonate, a brisk effervescence takes place with the evolution of carbon dioxide gas.
NaHCO3 + CH3COOH --> CH3COONa +H2O + CO2

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