Question

Write a short note on the displacement reaction.​

Answer 1

Answer:

A displacement reaction is the one wherein the atom or a set of atoms is displaced by another atom in a molecule.

A+ B – C → A – C + B. The equation exists when A is more reactive than B.

Answer 2

Answer:

There are two types of displacement reactions.

1. Single Displacement Reaction
2. Double displacement Reaction

Explanation:

• Single displacement Reaction

1. Definition: A Single Displacement reaction is a chemical reaction in which a more reactive element displaces a less reactive element from its compound.  
2. Characteristic: There is one element as a reactant and another element as a product.
3. Factor Affecting: This reaction takes place in accordance with the Reactivity Series.
4. General form: A +BC → AC + B
5. Examples:

1. Mg(s) + CuSO4 (aq)→ MgSO4 (aq)+ Cu(s)
2. HCl(aq) + Zn(s) → ZnCl2(aq) + H2(g)

• Double Displacement Reaction:

1. Definition: The chemical reactions in which one component each of both the reacting molecules is exchanged to form the products. 
2. Characteristic: There are two compounds as reactants and two different compounds as products.
3. Factor Affecting: The cations and anions of two different compounds switch places, forming two entirely different compounds.
4. General Form: AB + CD → AD + CB
5. Examples:

1. CuCl2(aq) + 2 AgNO3(aq) → Cu(NO3)2(aq) + 2 AgCl(s)
2. BaCl2 (aq) + H2SO4 (aq) → BaSO4 (s) + HCl (aq)

Hope you got each and every specific point.

Thank you.