Which one of the following statements is NOT correct for the given reaction?
Fe(S) + CuSO₄(aq) → FeSO₄(aq) + Cu(s)

Question

Question

This question was previously asked in

NDA (Held On: 21 April 2019) General Ability Test Previous Year paper

Attempt Online

Answer 1

Copper doesn’t replace iron from its solution.

This is because Copper is less reactive than iron.
A more reactive metal displaces the less reactive metal from its solution.
In the given reaction, Iron (Fe) displaces Copper (Cu) by giving up two electrons and gets oxidized and forms a new compound called ferrous sulfate.
Copper gets reduced.
Iron is a reducing agent, meaning that it loses 2 electrons.
CuSO₄ is an oxidizing agent, taking 2 electrons.
The final solution turns green on exposure to moist air.
The reaction is a redox reaction as it involves both loss and gain of electrons by different elements.