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# In a cell, the following reaction takes place: $Fe + CuS{O_4} \to FeS{O_4} + Cu$. The cell can be represented as:

Last updated date: 19th Mar 2023
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Hint:The given reaction $Fe + CuS{O_4} \to FeS{O_4} + Cu$ is an example of a displacement reaction. In this reaction, iron replaces copper present in copper sulphate as iron is highly reactive metal. Iron replaces copper in copper sulphate by giving up two electrons and gets oxidized and forms new compound ferrous sulphate.
When an iron nail is dipped in a solution of copper sulphate in water, the iron displaces the copper and turns the blue coloured solution of copper sulphate into a light green colour solution of iron sulphate. The cathode and anode are separated by two bars which represent a salt bridge. The anode should be placed on the left side and the cathode should be placed on the right side. The right hand half reaction shows reduction reaction and the left hand half reaction shows oxidation reaction. $Fe$ gets oxidized to $F{e^{ + 2}}$ and $CuS{O_4}$ is reduced to $Cu$ in the given reaction. So, we can say that iron acts as anode and copper acts as cathode in the reaction. So, the correct representation of the cell will be: $Fe|FeS{O_4}||CuS{O_4}|Cu$
Therefore, the cell can be represented as $Fe|FeS{O_4}||CuS{O_4}|Cu$