s -Block Elements

Industrial uses of lime, limestone, plaster of paris, cement


Preparation :
CaCO_{3}\xrightarrow[]{\Delta} CaO + CO_{2}
Ca(OH)_{2}\xrightarrow[]{\Delta} CaO + H_{2}O
Properties :

Uses : It is used in purification of sugar and dye stuffs
In the manufacture of Na2CO3 (Sodium carbonate)

Preparation : CaO + H_{2}O\rightarrow Ca(OH)_{2}
Properties :

uses :
It is used in mortar preparation
It is used as disinfectant

Calcium carbonate (CaCO3) :
Preparation : Ca(OH)_{2} + CO_{2}\rightarrow CaCO_{3}
Properties :

uses :
Building material i.e, marble
CaCO_{3} + MgCO_{3}\rightarrow is used as flux (to remove gangue as slag)
Mild abrasive in tooth paste.
Calcium bicarbonate (Ca(HCO3)2) :
CaCO_{3} + H_{2}O + CO_{2} \rightarrow Ca(HCO_{3})_{2}
Properties : Ca(HCO_{3})_{2} \rightarrow CaCO_{3} + H_{2}O + CO_{2}
Calcium sulphate (CaSO4) :

Gypsum properties :

Part1: View the Topic in this Video from 0:09 to 4:06

Part2: View the Topic in this Video from 0:06 to 1:40

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