Question

what happen when iron na
ils g.are placed in copper sulphate solution ?

Answer 1

When iron nail is dipped 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.

Answer 2

Iron is more “reactive” than copper. So it displaces Copper from Copper Sulphate solution.
Copper Solution is blue in colour. Iron Sulphate solution is Green.
Iron has blackish appearance, while Copper is reddish brown.
Reaction proceeds as
Fe + CuSO4 -FeSO4 + Cu
Due Iron Sulphate formed, the copper sulphate solution turns green and Copper deposits on Iron nails, giving them brownish colour