Question

Sodium hydroxide or caustic soda is produced by the electrolysis of an aqueous solution of sodium chloride. How?​

Answer 1

Answer:

Chlorine occurs naturally but not in its elemental (gas) form (as Cl2). Caustic soda (usually as NaOH) is produced as a liquid. These are produced by passing an electrical current through brine (common salt dissolved in water). This is called electrolysis, a process which has been known for over 120 years.

Chlorine & caustic Soda Production

CHLORINE PRODUCTION:

3 raw materials go in: salt, water and electricity

3 products can come out: chlorine, caustic soda and hydrogen

Chlorine purification unit – Courtesy of Vynova Group

Explanation:

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Answer 2

Answer:

Chlorine occurs naturally but not in its elemental (gas) form (as Cl2).

Caustic soda (usually as NaOH) is produced as a liquid.

These are produced by passing an electrical current through brine (common salt dissolved in water).

This is called electrolysis, a process which has been known for over 120 years.