What is the primary chemistry behind a displacement reaction?
One element displaces another from a compound
In a displacement (single displacement) reaction, a more reactive element pushes out a less reactive element from its compound and takes its place. For example, iron displaces copper: Fe + CuSO₄ → FeSO₄ + Cu.
The driving force is the reactivity series: only an element above another in reactivity can displace it, which is why the more active metal ends up in the compound.
"Two reactants combine to generate one product" describes a combination (synthesis) reaction, such as 2H₂ + O₂ → 2H₂O, not displacement.
"Compounds disintegrate into two or more components" describes a decomposition reaction, like 2H₂O → 2H₂ + O₂.
"Ion exchange occurs between two substances" describes a double displacement reaction, where two compounds swap ions, not a single element replacing another.
Hence, the chemistry behind a displacement reaction is that one element displaces another from a compound.
Similar Questions
If a piece of aluminium is added to iron(II) sulphate (FeSO4) solution, what will happen?
Balance the following reaction:
\(3\,\text{MnO}_2\,(s) + x\,\text{Al}\,(s) \rightarrow 3\,\text{Mn}\,(l) + y\,\text{Al}_2\text{O}_3\,(s) + \text{Heat}\)
What type of ions exchange between reactants in a double displacement reaction?
Important Questions from Chemical Reaction
An iron nail dipped in copper sulphate solution turns brown. This is due to which one of the following types of reactions?
Copper sulphate crystals available in the market are blue coloured crystals. By careful heating, they turn to white colour. Which one of the following is responsible for the blue colour?
Airbags work on the principle of a chemical reaction triggered by the impact producing a gaseous product that causes a sudden volume change. Which one among the following chemical conversions is responsible for this?
Which one of the following is the correct reactivity series with water?
Silver artefacts get tarnished in air due to the formation of
