Question

A gas is released with brisk effervescence on addition of a pinch of sodium bicarbonate to acetic acid. I) write the chemical reaction. Name the gas, ii) how would you test it chemically?

Answer 1

The compound X is ethanoic acid, commonly known as acetic acid. On reaction with sodium bicarbonate, it forms sodium acetate, water and carbon dioxide gas. Thus the brisk effervescence observed is due to carbon dioxide gas. Following is the chemical equation for the reaction

CH3COOH + NaHCO3 → CH3COONa + H2O + CO2

Answer 2

Answer -
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The compound X is ethanoic acid, commonly known as acetic acid. On reaction with sodium bicarbonate, it forms sodium acetate, water and carbon dioxide gas. Thus the brisk effervescence observed is due to carbon dioxide gas. Following is the chemical equation for the reaction

CH3COOH + NaHCO3 → CH3COONa + H2O + CO2