Which salt is formed when copper(II) oxide reacts with sulfuric acid?

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Study for the IGCSE Edexcel Chemistry Test. Access flashcards and multiple choice questions with hints and explanations. Get ready for your exam!

Multiple Choice

Which salt is formed when copper(II) oxide reacts with sulfuric acid?

Explanation:
When a metal oxide reacts with an acid, the oxide acts as a base and the acid supplies protons, giving a salt and water. Copper(II) oxide with sulfuric acid forms copper(II) sulfate and water. The reaction is CuO + H2SO4 → CuSO4 + H2O, so the salt produced contains copper(II) ions and the sulfate ion from the acid. The other possibilities would require different acids to supply the respective anions (chloride, nitrate, or sulfite), not sulfate.

When a metal oxide reacts with an acid, the oxide acts as a base and the acid supplies protons, giving a salt and water. Copper(II) oxide with sulfuric acid forms copper(II) sulfate and water. The reaction is CuO + H2SO4 → CuSO4 + H2O, so the salt produced contains copper(II) ions and the sulfate ion from the acid. The other possibilities would require different acids to supply the respective anions (chloride, nitrate, or sulfite), not sulfate.

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