Question

Heating limestone process​

Answer 1

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The process of converting limestone to quicklime involves heating limestone to a temperature of 1200-1400K. This thermal dissociation reaction produces carbon dioxide (CO2). The heat required for the process is habitually supplied by the combustion of coal or, oil in the lime kiln.

calcium carbonate → calcium oxide + carbon dioxide.

Answer 2

When limestone is heated in a kiln, calcium carbonate breaks down into calcium oxide and carbon dioxide. This type of reaction is called thermal decomposition. The process is called calcining.