Question

copper sulphate turns green iron nails are left in it stay for thirty minutes.gove reasons ​

Answer 1

Answer:

Because Iron displaces copper from its copper sulphate solution

Answer 2

Answer:

Hey Buddy!!!

Iron is more reactive than copper, therefore it can displace copper from its salts (here,copper sulphate).

The displacement reaction taking place can be written as :

Fe + CuSO4(aq) = FeSO4 + Cu

Iron + Copper Sulphate(aq) = Iron sulphate + copper

After 30 minutes:

1) The initial blue colour of copper sulphate solution is changed to light green colour of iron sulphate.

2) The initial silver colour of iron nail is changed to reddish-brown colour due to coating of copper metal on the nail.

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Tc!!

Hope it helps...