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Question

What changes in the colour of iron nails and copper sulphate solution do you observe after keeping the iron nails dipped in copper sulphate solution for about 30 minutes?
 


Solution

When iron nail (Fe) is kept in copper sulphate (CuSO4), reaction takes place between them. As iron is more reactive than copper, it can replace copper from CuSO4.

Fe+CuSO4FeSO4+Cu

CuSO4 is in blue in colour, while FeSO4 is in light green colour.

So, there will be a change in the composition and colour of the solution  (from blue to light green). And deposition of copper layer on surface of the nail.


Chemistry
Science for Tenth Class - Part II - Chemistry
Standard X

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