Question

why does the colour of copper sulphate solution change when an iron nail is dipped in it ?​

Answer 1

ANSWER:-❣❣⤵️⤵️

The colour of copper sulphate solution changes when an iron nail dipped in it because iron displace copper from its solution as it is more reactive than copper.

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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)