Explain the preparation and uses of the following compounds of calcium. i. Calcium oxide ii. Calcium hydroxide

Explanation

(i) Quick lime :
Preparation :
It is produced on a commercial scale by heating limestone in a lime kiln at 1173K (1070-1270).
`CaCO_3 Uses : Calcium oxide is used
(i) to manufacture cement, mortar and glass.
in the manufacture of sodium carbonate and slaked lime.
(iii) in the purification of sugar.
(iv) as drying agent.
Slaked lime :
Preparation : Calcium hydroxide is prepared by adding water to quick lime, CaO.
`CaO+H_2OtoCa(OH)_2`
Uses : Calcium hydroxide is used
(i) In thew preparation of mortar, a building material.
(ii) in white wash due to its disinfectant nature.
(iii) in glass making, in trannig industry, for the preparation of bleaching powder and for purification of sugar.