Question

You take an aqueous solution of CuSO, (blue in colour) in a
test tube. Now dip a clean iron nail in CuSO, solution. Ob-
serve the test tube after 20 minutes (approx). ​

Answer 1

Observation

Ω - You would observe blue sol. changes into light green

Ω - You would observe a reddish-brown coating of copper on IRON nail as Iron displaces copper from copper sulphate solution

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