Question

when an iron knife is dipped in a solution of copper sulphate a reddish brown layer get formed on the knife. explain.

Answer 1

Heya!!Here is your answer friend ⤵⤵
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⏪When an iron knife is dipped in a solution of copper sulphate , the following reaction takes place ,

CuSO4 +. Fe ------------FeSO4 + Cu.

➡It is a DISPLACEMENT REACTION. Iron being more reactive than copper displaces it from its aqueous solution. The color of the solution changes to light green and a reddish brown coat is deposed on iron.

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Hope it helps you ✌✌