Question

please answer my question​

Answer 1

Answer:

the blue colour solution is copper sulphate solution.

the colour is changed to green due to displacement reaction.

Explanation:

displacement reaction: a reaction in which a highly reactive metal displaces a low reactive metal from its solution.

as we have put iron nail in copper sulphate solution, the high reactive (than copper) metal - iron displaces copper(low reactive) from copper sulphate solution and forms ferrous sulphate solution wherein reddish copper is deposited on iron nail.

Reaction:

CuSO4(blue) + Fe = FeSO4 (green)+ Cu

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