Where is chlorine obtained in the chlor-alkali process?
Answer and explanation
Correct answer: At the anode
In the chlor-alkali process, concentrated brine is electrolysed. Chloride ions, Cl⁻, move towards the positively charged anode and lose electrons there: 2Cl⁻ → Cl₂ + 2e⁻. Thus chlorine gas is liberated at the anode. Hydrogen is produced at the cathode and sodium hydroxide remains in solution, so the other options do not describe chlorine formation.
Frequently asked questions
What is the correct answer to this question?
At the anode
Why is this the correct answer?
In the chlor-alkali process, concentrated brine is electrolysed. Chloride ions, Cl⁻, move towards the positively charged anode and lose electrons there: 2Cl⁻ → Cl₂ + 2e⁻. Thus chlorine gas is liberated at the anode. Hydrogen is produced at the cathode and sodium hydroxide remains in solution, so the other options do not describe chlorine formation.
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.
