Question

Why does the colour of copper sulphate solution change when an iron nail is dipped in it​

Answer 1

Answer:

When an iron nail is dropped into blue copper sulphate solution , the blue colour of the solution turns light green because of the formation of iron sulphate along with reddish brown deposit of copper.The balanced chemical equation for this reaction is as follows:

Fe + CuSO4 ---> FeSO4 + Cu

Answer 2

Answer:

Explanation:

This is because iron is more reactive  than copper and hence loses electrons and copper gains the electrons, thus, undergoing Displacement reaction, i.e., the metal with higher reactivity displaces the metal that is less reactive than the previous metal. The pure definition is:

Displacement reaction is a chemical reaction in which a more reactive element displaces a less reactive element from its compound. Both metals and non-metals take part in displacement reactions

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