Which gas is produced at the anode during the electrolysis of acidified water?
Answer and explanation
Correct answer: Oxygen
The governing concept is electrolysis and electrode reactions. In acidified-water electrolysis, oxidation occurs at the anode, producing oxygen; reduction at the cathode produces hydrogen. The overall equation is 2H₂O → 2H₂ + O₂, so option A is correct. Hydrogen is the cathode gas, while nitrogen and chlorine are not produced under these conditions.
Frequently asked questions
What is the correct answer to this question?
Oxygen
Why is this the correct answer?
The governing concept is electrolysis and electrode reactions. In acidified-water electrolysis, oxidation occurs at the anode, producing oxygen; reduction at the cathode produces hydrogen. The overall equation is 2H₂O → 2H₂ + O₂, so option A is correct. Hydrogen is the cathode gas, while nitrogen and chlorine are not produced under these conditions.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
