Question

Explain cholr-alkali process with the help of a diagram.​

Answer 1

When electricity is passed through an aqueous solution of sodium chloride (brine), it decomposes to form sodium hydroxide. This process is called chlor-alkali process.

 2NaCl(aq)     +     2H2O(l)    →    2NaOH(aq)     +     Cl2(g)     + H2(g)

Sodium chloride                       Sodium hydroxide  Chlorine gas

Uses of NaOH obtained from chlor-alkali process:

(i) It is used for de-greasing metals, soaps and detergents.

(ii) It is used for making paper and artificial fibres

Explanation: