Question

Give reason why colour of copper sulphate solution changes when an iron nail is dipped in it

Answer 1

Answer:

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.

Fe (s) + CuSO4 (aq) –––> FeSO4 (aq) + Cu (s)

Hence, the blue color of copper sulphate solution changes into green color because of this displacement reaction.

Explanation:

Answer: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 colour of the copper sulphate solution changes.

The reaction involved is

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Answer 2

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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 colour of the copper sulphate solution changes.

The reaction involved here is:

Fe (s) + CuSO4 (aq) → FeSO4 (aq) + Cu (s)