CH-659
Reactivity series
Chemistry · Secondary 3 · Medium · Reactivity series
Copper metal can be extracted from a solution of copper(II) sulfate using scrap iron. Which statement explains why this works?
- Iron is more reactive than copper and displaces it from solution.
- Iron is less reactive than copper and is coated by copper.
- Iron neutralises the acidic copper(II) sulfate solution.
- Iron acts as a catalyst for the decomposition of copper(II) sulfate.
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