Question

3.2 Mention the equations for oxidation and reduction processes for the reaction - Cuso, + Fe = Cu + Feso,​

Answer 1

Explanation:

The reaction Fe+CuSO4→Cu+FeSO4 is a redox reaction.

The complete ionic reaction can be written as

Fe+Cu²+ + SO4 ²−→Fe²+ +Cu+ SO4²−

The net ionic reaction can be written as

Fe+Cu²+ →Fe²+ +Cu

Iron is oxidized and copper is reduced.

Fe oxidation= Fe²− +2e−

Cu²+ +2e− reduction= Cu

The reaction is also a displacement reaction as iron displaces copper from its salt solution.

Answer 2

The reaction for oxidation and reduction processes in the given redox reaction is -

Oxidation - $Fe$ → $Fe^2^- + 2e^-$

Reduction - $Cu^2^+ + 2e^-$ → $Cu$

Explanation

REDOX REACTION -

• The chemical reaction in which reduction and oxidation of the reactants take place simultaneously.
• The substance that is reduced is the reducing agent and the reactant getting oxidized is the oxidizing agent.
• The reaction is also an example of a displacement reaction.
• According to the reactivity series of metals, iron is more reactive than copper, therefore, displacing it in the reaction.
• The color of the solution on the reaction changes from blue to green due to the iron.
• The complete ionic equation is -

                   $Fe + Cu^2^+ + SO_4^2^-$ → $Fe^2^+ + Cu + SO_4^2^-$