Question

can a displace ment reaction be a reox reaction ? explain with an example​

Answer 1

Answer:

a simple displacement reaction is also a redox reaction as it is always accompanied by oxidation-reduction.

Example-1

2 KI + Cl2 = 2KCl + I2

In this reaction, the more electronegative chlorine displaces iodine from its salt, potassium iodide. Chlorine is reduced from zero state to -1, and iodine is oxidised from -1 state to zero.

Example-2

Zn + H2SO4 = ZnSO4 + H2

Here, zinc is oxidised to +2 state from zero state, and hydrogen is reduced to zero state from +1 state. Zinc is more electropositive than hydrogen, and so it displaces hydrogen from the acid.

In a simple displacement reaction, one of the reactants is always an element and it has to undergo either oxidation or reduction in the course of displacing another element from the latter’s compound. Hence, such a reaction is invariably a redox reaction.

On the other hand, double displacement reactions like precipitation reactions are non-redox in character.

Answer 2

Explanation:

Here, zinc atom donates two electrons (to copper atom) and forms a zinc ion, Zn2+. ... SO2–4 ions remain as such and hence above reaction involves both reduction as well aso xidation processes and is a redox reaction. Thus, a displacement reaction can be a redox reaction.