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Why is an aqueous solution of sodium chloride used in the chlor-alkali process?

Answer and explanation

Correct answer: It gives chlorine, hydrogen and sodium hydroxide

The aqueous solution of sodium chloride is called brine. During electrolysis, chloride ions are oxidised at the anode to form chlorine, while water is reduced at the cathode to form hydrogen and hydroxide ions. The sodium ions combine with hydroxide ions to produce sodium hydroxide in solution. Thus option A lists all three useful products; the other options are unrelated.

Related tags

Chlor-Alkali-ProcessBrineElectrolysisIndustrial-ChemicalsClass10AcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And Behaviour

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