Essential Chemistry for IGCSE - Metals And Reactivity (Section 5 - No. 29)
Which statement describes the best about the action of adding magnesium to copper (II) sulfate?
The magnesium reacts with the sulfate, producing magnesium sulfate.
The magnesium dissolves in the solution and the solution becomes warmer.
Magnesium displaces the copper ions from the solution.
The magnesium is reduced by the copper, forming copper sulfate.
Explanation
The magnesium displaces the copper ions from the solution.
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