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Which solid product is formed when calcium carbonate is strongly heated?

Answer and explanation

Correct answer: Calcium oxide

On thermal decomposition, calcium carbonate forms solid calcium oxide and carbon dioxide gas: \(\mathrm{CaCO_3(s) \xrightarrow{\Delta} CaO(s) + CO_2(g)}\). Therefore, the solid product is calcium oxide. Calcium hydroxide is formed when calcium oxide reacts with water, not by heating calcium carbonate alone.

Related tags

ScienceClass 10Chemical ReactionsThermal DecompositionCalcium CarbonateChemical Equations

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