In the reaction Mg + CuSO₄ → MgSO₄ + Cu, which species is oxidised?

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Question

In the reaction Mg + CuSO₄ → MgSO₄ + Cu, which species is oxidised?

Accepted Answer

Magnesium atoms — Magnesium is oxidised: it goes from oxidation state 0 (as Mg metal) to +2 (as Mg²⁺ in MgSO₄), losing electrons. Copper(II) ions are reduced from +2 to 0. Sulfate ions and oxygen atoms do not change oxidation state in this reaction.

Answer

Copper(II) ions

Answer

Oxygen atoms

Answer

Magnesium atoms

Answer

Sulfate ions

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