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Answer :

Ethanoic acid or acetic acid is a carboxylic acid. When carboxylic acids are added to metal carbonates or bicarbonates, carbon dioxide gas is produced. The observations made are-

• A colourless odourless gas is produced which turns lime water milky. (Reason: as stated above, carbon dioxide gas is produced)

• Water droplets are also found in the walls of the flask. (Reason: as stated above water vapour is formed which condenses on the walls of the flask)

The reaction is as follows-

NaHCO3 +CH3COOH NaC2H3O2 + H2O + CO2

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