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Why does the colour of capper sulphate solution changed whwn an iron nail is dipped in it |
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Answer» Simply, colour change is one of the characteristics of chemical reaction. When fe reacts with Cuso4, it produces new substances i.e. FeSo4 and Cu is displaced. Since new substances are formed with new properties and colour of FeSo4 is green that\'s why colour change takes place. Iron displaces copper Because iron displaces copper from copper sulphate solution..... 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.\xa0 |
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