When vinegar is added to some marble chips ( calcium carbonate) bubbles of gas are observed. Which gas is produced ?How can it be identified?
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The gas is carbon dioxide, produced by acid - base reaction between calcium carbonate and acetic acid. It can be identified with a simple test with limewater.
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Answer:
CH3COOH+ CaCO3 --- CH3COOCa + H2O +CO2
CO2 gas is produced which can be tested by passing it through calcium hydroxide, if it turns milky white, then it is CO2!
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