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Answer» :1) The nail TURNED brown due to the deposition of COPPER on the nail.2) Copper Sulphate (blue) + Iron nail (silver) → Ferrous Sulphate (GREEN) + Copper (brown)3) Displacement reaction4) Iron is more reactive in the given reaction.Knowledge Bytes:→ Displacement Reaction:Displacement reaction is a chemical reaction in which a more reactive metal displaces a LESS reactive metal from its salt solution. The reactivity table is given below:Please refer attachment to VIEW the image.The most common displacement reaction is that of the copper sulphate with the iron nail where the more reactive metal iron, displaces copper from its salt solution.CuSO₄ + Fe → FeSO₄ + Cu |
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