Question

why does colour of tge copper sulphate solution change when iron nail is dipped in it give reason with eqaution

Answer 1

when iron is dipped in it . the iron displaces copper because it is reactive than the copper and become ferrous sulphate.as a result the colour changes.

Answer 2

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When an iron nail dipped in the copper sulphate solution than iron displaces copper from the copper sulphate because iron is more reactive than copper. Therefore the colour of the copper sulphate solution changes.

The reaction involved here is:

Fe (s) + CuSO4 (aq) → FeSO4 (aq) + Cu (s)