Question

Explain the following process/events.

1. 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:

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Answer 2

Explanation:

The displacement reaction taking place can e written as :

Fe + CuSO4(aq) == FeSO4 + Cu

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

Now, enough basics, directly to question…

A fter 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.