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Non-metal oxides can form acidic solutions in water. Which of the following is an example?

Answer and explanation

Correct answer: Carbon dioxide

Carbon is a non-metal, and its oxide carbon dioxide dissolves in water to form carbonic acid: CO2 + H2O ⇌ H2CO3. This makes the solution acidic, so option C is correct. Calcium oxide, magnesium oxide and sodium oxide are generally metal oxides and show basic behaviour, although some oxides can have special or amphoteric properties.

Related tags

Non-Metal-OxideCarbon-DioxideAcidic-OxideCarbonic-AcidClass-10AcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And Behaviour

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