Question

in displacement reaction why the color of solution changes?​

Answer 1

Explanation:

The green colour of copper chloride fades and the solution becomes colourless. A red-brown coating of copper metal is deposited on the lead strip. Lead is more reactive than copper hence it is able to displace it from its solution.

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Answer 2

Explanation:

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