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Which substance remains in the solution during the chlor alkali process?

Answer and explanation

Correct answer: Sodium hydroxide

The governing concept is electrolysis of brine in the chlor-alkali process. Brine contains sodium chloride and water. During electrolysis, chlorine gas is released at the anode and hydrogen gas is released at the cathode, while sodium hydroxide is formed and remains in the aqueous solution. The overall reaction is 2NaCl + 2H₂O → 2NaOH + Cl₂ + H₂. The other choices are unrelated substances and are not the product left in the solution.

Related tags

Acids Bases SaltsChlor-Alkali ProcessBrineElectrolysisSodium HydroxideAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And Behaviour

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