Question

why blue colour of cupper sulphate solution fades when an iron rod is dipped into it

Answer 1

Answer:

Also the blue colour of the solution gradually fades. ... When an iron nail dipped in the copper sulphate solution than iron displaces copper from the copper sulphate because iron is more reactive than copper. Therefore the color of the copper sulphate solution changes.

Explanation:

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Answer 2

Answer:

when an iron nail isdipped in a solution of CuSO4, it displacescopper from the Solution, which gets deposited or precipitated as a red or red-brown residue. Also the blue colour of thesolution gradually fades.