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What happens to hydrogen in the reaction between copper oxide and hydrogen?

Answer and explanation

Correct answer: Hydrogen is oxidised to form water

The reaction is \(\mathrm{CuO + H_2 \rightarrow Cu + H_2O}\). Hydrogen combines with oxygen removed from copper oxide and forms water. Addition of oxygen is oxidation, so hydrogen is oxidised. In contrast, copper oxide is reduced because it loses oxygen. Exam tip: Identify oxidation by checking which substance gains oxygen.

Related tags

Class 10 ScienceChemical ReactionsRedox ReactionOxidationHydrogenCopper Oxide

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