Question

Put two to three iron nails in the blue solution of copper sulphate and after 15 to 20

minutes the colour of the solution turns green.​

Answer 1

Answer:

Remember the reactivity series of metal

Kindly, look at the picture above...!!!

Explanation:

s, which says that Iron is more reactive than copper, therefore it can displace copper from its salts (here, copper sulfate).

The displacement reaction taking place can e was written as :

Fe + CuSO4(aq) == FeSO4 + Cu

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

Now, enough basics, directly to question…

An after 30 minutes:

1) The initial blue color of copper sulfate solution is changed to a light green color of iron sulfate.

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

Hope it helps you...!!!