Question

While working in a lab, Mary dropped a blade in a solution of copper sulphate. She observed a change in the colour of the solution from *



red to blue

blue to colourless

green to blue

blue to green


​

Answer 1

Answer:

When an iron nail immersed in the solution of copper sulphate than iron displaces copper from the solution of copper sulphate because iron is more reactive than copper. Therefore copper sulphate solution colour changes from blue to pale green.

Answer 2

Answer:

blue to colorless

Explanation:

since iron is more reactive than copper so iron will displace copper

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