Question

What happened when iron nail is dipped into the copper sulphate

Answer 1

Answer:

it gives a brownish red deposit

Answer 2

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The blue colour of solution gets converted in to green colour that shows the presence of ferrous sulphate.

The brown deposition of copper is formed in the iron nail.

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Since, Iron is more reactive than copper it displaces the copper from its salt solution and ferrous sulphate is formed and copper get deposited in the iron nail.

This is a type of displacement reaction in which a high reactive metal displaces the less reactive metal from its salt solution.