At which electrode is chlorine gas formed in the chlor-alkali process?
Answer and explanation
Correct answer: Anode
The governing concept is oxidation at the anode during electrolysis. In brine, chloride ions lose electrons at the anode: 2Cl⁻ → Cl₂ + 2e⁻. This oxidation produces chlorine gas. At the cathode, water is reduced and hydrogen gas forms instead. Thus option A is correct. Chlorine is not produced equally at both electrodes and is not absent from the process.
Frequently asked questions
What is the correct answer to this question?
Anode
Why is this the correct answer?
The governing concept is oxidation at the anode during electrolysis. In brine, chloride ions lose electrons at the anode: 2Cl⁻ → Cl₂ + 2e⁻. This oxidation produces chlorine gas. At the cathode, water is reduced and hydrogen gas forms instead. Thus option A is correct. Chlorine is not produced equally at both electrodes and is not absent from the process.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
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