Which gas is obtained in a greater volume during the electrolysis of water?
Answer and explanation
Correct answer: Hydrogen
The balanced equation for electrolysis of water is \(2H_2O(l) \rightarrow 2H_2(g) + O_2(g)\). At the same temperature and pressure, gas volume is proportional to the number of moles, so the volume ratio of hydrogen to oxygen is \(2:1\). Therefore, hydrogen is obtained in the greater volume, while oxygen is produced in half that volume.
Frequently asked questions
What is the correct answer to this question?
Hydrogen
Why is this the correct answer?
The balanced equation for electrolysis of water is \(2H_2O(l) \rightarrow 2H_2(g) + O_2(g)\). At the same temperature and pressure, gas volume is proportional to the number of moles, so the volume ratio of hydrogen to oxygen is \(2:1\). Therefore, hydrogen is obtained in the greater volume, while oxygen is produced in half that volume.
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.
