what happens to limestone on heating
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Answer:
If limestone is heated , it breaks down to form calcium oxide and carbon dioxide. Calcium oxide is also called quicklime. It is yellow when hot, but white when cold.
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Explanation:
Limestone is chemically calcium carbonate. As Dolomits it is a mixture of magnesium and calcium carbonate. Ket’s stick to limestone, calcium carbonate. When heated it will decompose to form carbon dioxide and calcium oxide. This is the basis of lime products such as lime mortar, lime putty etc. much used historically in building industry. When water is added to calcium oxide the results is an exothermic reaction (heat given off) as the water hydrates the oxide to form a hydroxide by a process of slaking. Hence slaked lime.
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