Which gas is produced at the anode in the chlor-alkali process?
Answer and explanation
Correct answer: Chlorine
During chlor-alkali electrolysis of concentrated brine, chloride ions move to the anode and lose electrons by oxidation: 2Cl− → Cl2 + 2e−. Consequently, chlorine gas is released at the anode. Hydrogen is formed at the cathode, while oxygen and nitrogen are not the expected products in this school-level process. Hence option A is correct. The chlorine obtained can also be used in making bleaching powder and other compounds.
Frequently asked questions
What is the correct answer to this question?
Chlorine
Why is this the correct answer?
During chlor-alkali electrolysis of concentrated brine, chloride ions move to the anode and lose electrons by oxidation: 2Cl− → Cl2 + 2e−. Consequently, chlorine gas is released at the anode. Hydrogen is formed at the cathode, while oxygen and nitrogen are not the expected products in this school-level process. Hence option A is correct. The chlorine obtained can also be used in making bleaching powder and other compounds.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Metals and Non-metals.
