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When copper oxide is heated with hydrogen what happens to copper oxide?

Answer and explanation

Correct answer: It is reduced to copper

On heating, the reaction is \(\mathrm{CuO + H_2 \rightarrow Cu + H_2O}\). Oxygen is removed from copper oxide to form water, so \(\mathrm{CuO}\) is reduced to copper. Oxidation is incorrect because oxygen is not added to copper oxide; it is removed. Exam tip: removal of oxygen indicates reduction.

Related tags

Class 10 ScienceChemical ReactionsReductionCopper OxideRedox Reaction

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