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Industrial Preparation: Contact process

In choralkali...

Question

In choralkali process H+ and cl- ions doesn't combine and form HCl ?

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Solution

Yes HCl is formed,
When electricity is passed through a concentrated solution of sodium chloride then it decomposes to form sodium hydroxide(caustic soda), chlorine and hydrogen.

2NaCl(aq) + 2H2O (electricity)--------- 2NaOH(aq) + Cl2(g) + H2(g)

The two products- chlorine and hydrogen, formed during chlor-alkali process combine to form hydrochloric acid.

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