Question

Write 2 tests to demonstrate that CH3COOH is acidic in nature.

Answer 1

Ans:

Reaction with sodium carbonate:
Ethanoic acid reacts with sodium carbonate to give sodium acetate ,carbon dioxide and water

2CH3-COOH + Na2CO3→ 2CH3COO-Na+ + CO2 + H2O

Reaction with sodium hydrogen carbonate:
Ethanoic acid reacts with sodium hydrogen carbonate to give sodium acetate ,carbon dioxide and water.
CH3-COOH + NaHCO3→ CH3COO—Na+ + CO2+ H2O

In the above reactions formation of Salt and water, release of Carbon dioxide gas confirmes acidic nature of CH3COOH.

Reaction with base:
Ethanoic acid reacts with bases to give salt and water.
Example:
Reaction of ethanoic acid with sodium hydroxide to form sodium acetate and water.
CH3-COOH + NaOH → CH3COONa + H2O

In the above reactions formation of Salt and water confirmes acidic nature of CH3COOH.