In the stepwise preparation of pure calcium carbonate from limestone,the step referred to as calcination involves:
A)thermal decomposition of calcium carbonate to calcium oxide
B)addition of water to calcium oxide to form calcium hydroxide
C)bubbling carbon dioxide through aqueous calcium hydroxide
D)heating calcium oxide with carbon to form calcium metal
E)melting of calcium oxide

Question

Quizplus · Accepted Answer

Calcination is the process of heating a substance to a high temperature in the absence or limited supply of air or oxygen, to decompose it or transform it into another substance. In the stepwise preparation of pure calcium carbonate from limestone, calcination involves heating calcium carbonate (limestone) to a high temperature (around 900-1000°C) in a kiln, which results in the thermal decomposition of calcium carbonate to calcium oxide (quicklime) and carbon dioxide gas: 
CaCO3 (limestone) → CaO (quicklime) + CO2

In the Stepwise Preparation of Pure Calcium Carbonate from Limestone,the