In the reaction between copper(II) oxide and hydrogen, the formation of water indicates the oxidation of which substance?
Answer and explanation
Correct answer: Hydrogen
The reaction is \(\mathrm{CuO + H_2 \rightarrow Cu + H_2O}\). Hydrogen gains oxygen from copper(II) oxide and forms water. Gain of oxygen is oxidation, so hydrogen is oxidised. In contrast, copper(II) oxide loses oxygen to form copper and is therefore reduced.
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What is the correct answer to this question?
Hydrogen
Why is this the correct answer?
The reaction is \(\mathrm{CuO + H_2 \rightarrow Cu + H_2O}\). Hydrogen gains oxygen from copper(II) oxide and forms water. Gain of oxygen is oxidation, so hydrogen is oxidised. In contrast, copper(II) oxide loses oxygen to form copper and is therefore reduced.
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.
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