10.18 Describe two important uses of each of the following : (i) caustic soda (ii) sodium carbonate (iii) quicklime.
It is an important primary material for manufacturing cement and is cheapest form of alkali
Which is used in the manufacturing of sodium carbonate from caustic soda
Employed in the purification of sugar and in the manufacture of dye stuffs
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(i) Caustic Soda-
The chemical name is sodium hydroxide (
). Sodium hydroxide is generally prepared commercially by the electrolysis of sodium chloride in Castner-Kellner cell.
Uses-
(ii) Sodium Carbonate-
The common name is washing soda (
).Sodium carbonate is generally prepared by Solvay Process.
Uses-
(iii) Quick lime-
The chemical name is calcium oxide and the formula is
. It is prepared on a commercial scale by heating limestone (CaCO3) in a rotary kiln at 1070-1270 K ( 
)
Uses-