When Copper carbonate is heated it releases a brisk effervescence given by which gas?

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CO2

answer is A.

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Detailed Solution

Concept- Thermal decomposition is a reaction in which a material is heated and converted into at least two other compounds. Limewater turns milky when a sample of the gas created is shaken with it. That the gas is carbon dioxide is evident from this. Due to the breakdown of the copper carbonate into copper oxide and carbon dioxide, the solid in the test tube changes colour. A decomposition reaction involves breaking into simpler products
In a decomposition reaction, a molecule breaks down to give simpler molecules. Brisk effervescence is caused by the action of

. The reaction is as follows;

Hence, the correct answer is option 1.

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