Question:
An aryl carboxylic acid on treatment with sodium hydrogen carbonate liberates a gaseous molecule. Identify the gas molecule liberated.
An aryl carboxylic acid on treatment with sodium hydrogen carbonate liberates a gaseous molecule. Identify the gas molecule liberated.
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Carboxylic acids give brisk effervescence with NaHCO3} due to CO2} gas evolution.
Updated On: May 19, 2025
- H2
- CO2
- CO
- O2
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The Correct Option is B
Solution and Explanation
Carboxylic acids react with NaHCO3} to liberate carbon dioxide gas:
Ar–COOH + NaHCO3} → Ar–COONa + H2}O + CO2}↑
Effervescence of CO2} is a test for carboxylic acids.
Ar–COOH + NaHCO3} → Ar–COONa + H2}O + CO2}↑
Effervescence of CO2} is a test for carboxylic acids.
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