Question

Why does the colour of copper sulphate solution change when an iron nail is dipped in it? Write two observations.

Answer 1

Answer:

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Explanation:

It is because displacement reaction takes place.

Iron displaces copper from copper sulphate solution and forms pale green

coloured solution of FeS04 and reddish brown copper metal gets deposited.

Fe(s) + CuS04(aq) ——–> FeS04(aq) + Cu(s)