Question

Why does the color of the solution change when an iron nail is immersed in a copper sulphate solution?​

Answer 1

Answer:

because iron nail gets reacted with copper

Answer 2

When an iron nail immersed in the solution of copper sulphate, iron displaces copper from the solution of copper sulphate because iron is a more reactive metal than copper. Therefore copper sulphate solution colour changes from blue to pale green.The name of this reaction is “displacement reaction” where a more reactive metal replaces the less reactive metal in its salt solution to form a compound.

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