Question

When iron powder is added in cuso4 solution , blue colour of solution turn in which colour?

Answer 1

Iron is more reactive than copper. So, when an iron nail is dipped in a copper sulphate solution, iron displaces copper from its solution to form iron sulphate, which is green in color. Hence, the blue color of copper sulphate solution changes into green color because of this displacement reaction.

Answer 2

When iron powder is added in cuso4 solution, blue colour change into light green and iron nails can be seen look like a brownish colour.


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