Which gas is formed at the anode in the chlor-alkali process?
Answer and explanation
Correct answer: Chlorine
The governing concept is electrode-wise discharge during electrolysis of brine. Chloride ions move toward the positive anode and are oxidised: 2Cl⁻ → Cl₂ + 2e⁻. Thus chlorine gas is formed at the anode, so option B is correct. Hydrogen is formed at the cathode, while carbon dioxide and ammonia are not products of the chlor-alkali process.
Frequently asked questions
What is the correct answer to this question?
Chlorine
Why is this the correct answer?
The governing concept is electrode-wise discharge during electrolysis of brine. Chloride ions move toward the positive anode and are oxidised: 2Cl⁻ → Cl₂ + 2e⁻. Thus chlorine gas is formed at the anode, so option B is correct. Hydrogen is formed at the cathode, while carbon dioxide and ammonia are not products of the chlor-alkali 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.
