What is the Difference Between Single Displacement and Double Displacement Reaction?
🆚 Go to Comparative Table 🆚The main difference between single displacement and double displacement reactions lies in the number of substances involved in the displacement process. Here are the key differences:
Single Displacement Reaction:
- A single displacement reaction involves one chemical species replacing a part of another chemical species.
- It occurs when a more reactive element displaces a less reactive element from a compound.
- A single displacement reaction typically has one reactant and one product.
- These reactions can be predicted using the periodic table or an activity series.
Double Displacement Reaction:
- In a double displacement reaction, two ionic species are exchanged between two molecules.
- This type of reaction involves the exchange of cations or anions in ionic compounds.
- Double displacement reactions have two compounds as reactants and two new compounds as products.
- One common type of double displacement reaction is the precipitation reaction, in which one product is a solid precipitate.
In summary, single displacement reactions involve the replacement of one element in a compound by a more reactive element, while double displacement reactions involve the exchange of ionic species between two molecules.
Comparative Table: Single Displacement vs Double Displacement Reaction
Here is a table comparing single displacement and double displacement reactions:
Feature | Single Displacement Reaction | Double Displacement Reaction |
---|---|---|
General Form | A + BC → AC + B | AB + CD → AD + CB |
Definition | A single-replacement reaction replaces one element for another in a compound. | A double-replacement reaction exchanges the cations (or the anions) of two ionic compounds. |
Example | Zn + Fe(NO3)2 → Zn(NO3)2 + Fe. | KC2H3O2 + Li2CO3 → ?. |
Prediction | The periodic table or an activity series can help predict whether single-replacement reactions will occur. | Solubility rules are used to predict whether some double-replacement reactions will occur. |
Precipitation Reaction | A type of double-replacement reaction in which one product is a solid. | No direct equivalent in single displacement reactions. |
In a single displacement reaction, one element replaces another element in a compound, where a more reactive element in the compound with which it reacts can replace the other element. In contrast, a double displacement reaction exchanges the cations (or the anions) of two ionic compounds, and solubility rules are used to predict whether some double-replacement reactions will occur.
- Double Displacement vs Double Decomposition Reaction
- Double Displacement vs Acid Base Reactions
- Addition vs Substitution Reaction
- Combination vs Decomposition Reaction
- Synthesis Reaction vs Substitution Reaction
- Synthesis Reaction vs Dissociation Reaction
- Homogeneous vs Heterogeneous Reactions
- Elimination vs Substitution Reaction
- Double Bond vs Single Bond
- Elementary vs Complex Reaction
- Oxidation Reaction vs Reduction Reaction
- Coupled vs Uncoupled Reaction
- Chemical vs Physical Reaction
- First vs Second Order Reactions
- Unimolecular vs Bimolecular Reactions
- Composition vs Reaction Stoichiometry
- Heat of Solution vs Heat of Reaction
- Nuclear Reaction vs Chemical Reaction
- Endothermic vs Exothermic Reactions