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What happens at the anode in the chlor-alkali process?

Answer and explanation

Correct answer: Chloride ions lose electrons and form chlorine

The governing electrochemical rule is oxidation at the anode, meaning loss of electrons. In brine, chloride ions migrate toward the anode and are oxidised according to 2Cl⁻ → Cl₂ + 2e⁻, releasing chlorine gas. Hence option A is correct. Hydrogen is produced at the cathode, sodium metal is not deposited from aqueous brine, and sodium hydroxide remains in solution rather than precipitating as stated.

Related tags

AnodeChlorineChlor-Alkali ProcessAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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