10.18 Describe two important uses of each of the following : (i) caustic soda (ii) sodium carbonate (iii) quicklime.
(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.
(ii) Sodium Carbonate-
The common name is washing soda ().Sodium carbonate is generally prepared by Solvay Process.
(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 ( )