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In the reaction between heated copper(II) oxide and hydrogen, what does hydrogen change into?

Answer and explanation

Correct answer: Water

The reaction is CuO + H₂ → Cu + H₂O. Hydrogen combines with the oxygen removed from copper(II) oxide, so it changes into water. At the same time, CuO loses oxygen and is reduced to copper, while hydrogen gains oxygen and is oxidised. Oxygen itself is not produced, and hydrogen peroxide is not the product under these conditions. Hence option A is correct.

Related tags

Redox ReactionHydrogenCopper OxideWater FormationChemical EquationsChemical Reactions And EquationsChemical Substances – Nature And BehaviourChemical Substances Nature And Behaviour

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