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Question
Name the gas evolved when ethanoic acid is added to sodium carbonate. How would you prove the presence of this gas?
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Solution
Carbon dioxide evolves when ethanoic acid is added to sodium carbonate.
2CH3COOH + Na2CO3 → 2CH3COONa + CO2 + H2O
When the gas evolved during this reaction, is passed through the lime water in a test tube, the latter turns milky. This indicates that the gas evolved is carbon dioxide.
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