because the iron in change into iron sulphate
When an iron nail is put in copper sulphate solution, the blue colour fades because of the formation of ferrous sulphate which is green in colour.Hope it helps...
When iron nail is putted in Copper sulphate, it takes reaction between them and Copper sulphate changes its color from blue to light green.
This should determine more reactive than copper.
This could replace copper from CuSO4, and blue color and FeSO4 is in light green color. It will change its colors due to copper iron nails functions.
observations that are observed when an iron nail is put inside copper sulphate solution are :
1) the color of iron nail changes to brownish
2) the blue color copper sulphate solution fades
chemical equation :
Fe(s) + CuSO4 (aq) → FeSO4(aq) + Cu(s)
1. The iron will displace copper from copper sulfate
2. The copper sulphate is blue in color but when iron is added to copper sulfate, it's color becomes blue
befoe putting iron in cuso4 iron is normal in colour after it turns it gets rusted
blue colour solution will change into green colour solution
this is because iron is more reactive than copper and displaces copper in the reaction below :
CuSo4 + Fe FeSo4 + cu
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iron become brown as copper is deposited on it as it forn feso4 solution and cu displace deposit on iron nail
when iron is left in CuSo4 then displacement reaction take place and iron will have a layer of copper on it
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When iron nail is put inside copper sulphate solution iron being more reactive than copper displaces copper from CuSO4 solution
REACTION: CuSo4+Fe ---> FeSO4+Cu
OBSERVATION:The copper displaced by iron in the reaction is visible as a pink-brown precipitate that usually forms on the unreacted mass of solid iron left over.
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