Question

What do you observe when colour of copper sulphate solution changes when an iron nail is dipped in it. (write observations) (any two)

Answer 1

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 is

Fe+CuSo4-----FeSo4+Cu


the colour changes from blue to green

Answer 2

Hii,

Answer in attachment.

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