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Why are metal oxides generally considered basic?

Answer and explanation

Correct answer: They react with acids to form salt and water

The governing property of a base is its ability to neutralise an acid. Many metal oxides show this behaviour: they react with acids to produce a salt and water, for example, copper oxide reacts with hydrochloric acid to form copper chloride and water. This neutralisation reaction supports their generally basic classification. Option B describes acidic behaviour and is not universally true; metal oxides are not always gases, and option D has no chemical basis. The word generally also allows recognized exceptions such as amphoteric oxides.

Related tags

Metal OxidesBasic NatureNeutralisationAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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