Question

On heating, calcium carbonate gets converted into calcium oxide and carbon dioxide Is this a physical or a chemical change? (b) Can you prepare one acidic and one basic solution by using the products formed in the above process? If so, write the chemical equation involved.

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Answer

(a) Chemical change.

(b) Acidic and basic solutions can be prepared by dissolving the products of the above process in water.

CaO + H2O → Ca(OH)2              (basic solution)

CO2 + H2O → H2CO3                 (acidic solution)

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