Question

On immersing iron nail in CuSO4 for few minutes. You will observe -

Answer 1

Answer:

Blue solution turns green and iron nails turn brown

Explanation:

This is because Fe ions displace Cu ions from CuSO4 soln resulting in FeSO4 which is dirty green in colour. Displaced Cu ions get deposited on the iron nail forming a brown coating

Answer 2

On immersing iron nail in $CuSO_4$ solution we will notice change in colour from BLUE to GREEN and a BROWN deposit would be seen on the iron nails.

It is because the iron ions slowly displaces the copper ions form its solution due to its high reactivity. Iron ions gets mixed solution whereas due to Displacement reaction the copper ions gets deposited on iron nails.

$CuSO_4+Fe------> FeSO_4+Cu$