Describe Calcium Oxide and its uses.

1.	Describe Calcium Oxide and its uses.
Answer» Calcium Oxide or Quick Lime, CaO: It is prepared on a commercial scale by heating limestone (CaCO₃) in a rotary kiln at 1070-1270 K. CaCO₃ -----> CaO + CO₂ Uses: (i) It is an important primary material for manufacturing cement and is the cheapest form of alkali. (ii) It is used in the manufacture of sodium carbonate from caustic soda.

Answer»

Calcium Oxide or Quick Lime, CaO:

It is prepared on a commercial scale by heating limestone (CaCO₃) in a rotary kiln at 1070-1270 K.

CaCO₃ -----> CaO + CO₂

Uses:

(i) It is an important primary material for manufacturing cement and is the cheapest form of alkali.

(ii) It is used in the manufacture of sodium carbonate from caustic soda.

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