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Copper oxide forms salt and water when added to dilute acid. What is the nature of copper oxide?

Answer and explanation

Correct answer: Basic oxide

Copper(II) oxide reacts with an acid such as hydrochloric acid: CuO + 2HCl → CuCl₂ + H₂O. Formation of salt and water from an acid and a metal oxide is a neutralisation reaction, showing that the oxide has basic character. Most metal oxides are basic, although a few may be amphoteric. Copper oxide is not an acidic oxide, a gas, or a salt, so option B is correct.

Related tags

Copper OxideMetal OxideNeutralisationAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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