At which electrode is chlorine produced in the chlor-alkali process?
Answer and explanation
Correct answer: Anode
During electrolysis of brine, chloride ions move towards the positively charged anode. At the anode they lose electrons according to the oxidation process 2Cl⁻ → Cl₂ + 2e⁻. The chlorine atoms combine to form chlorine gas. Hence option A, the anode, is correct. Hydrogen is produced at the cathode, so option B confuses the two electrode reactions, while C and D are inconsistent with electrolysis.
Frequently asked questions
What is the correct answer to this question?
Anode
Why is this the correct answer?
During electrolysis of brine, chloride ions move towards the positively charged anode. At the anode they lose electrons according to the oxidation process 2Cl⁻ → Cl₂ + 2e⁻. The chlorine atoms combine to form chlorine gas. Hence option A, the anode, is correct. Hydrogen is produced at the cathode, so option B confuses the two electrode reactions, while C and D are inconsistent with electrolysis.
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.
